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HTML
690 lines
27 KiB
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<body>
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<div class="document">
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<a class="reference external image-reference" href="https://odoo-community.org/get-involved?utm_source=readme">
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<img alt="Odoo Community Association" src="https://odoo-community.org/readme-banner-image" />
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</a>
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<div class="section" id="ddmrp">
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<h1>DDMRP</h1>
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<!-- !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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!! This file is generated by oca-gen-addon-readme !!
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!! changes will be overwritten. !!
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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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!! source digest: sha256:f43055b32a5e8e104d8a45da35fc5716767773214054bbfe54da0c23dd8be731
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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! -->
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<p><a class="reference external image-reference" href="https://odoo-community.org/page/development-status"><img alt="Beta" src="https://img.shields.io/badge/maturity-Beta-yellow.png" /></a> <a class="reference external image-reference" href="http://www.gnu.org/licenses/lgpl-3.0-standalone.html"><img alt="License: LGPL-3" src="https://img.shields.io/badge/license-LGPL--3-blue.png" /></a> <a class="reference external image-reference" href="https://github.com/OCA/ddmrp/tree/16.0/ddmrp"><img alt="OCA/ddmrp" src="https://img.shields.io/badge/github-OCA%2Fddmrp-lightgray.png?logo=github" /></a> <a class="reference external image-reference" href="https://translation.odoo-community.org/projects/ddmrp-16-0/ddmrp-16-0-ddmrp"><img alt="Translate me on Weblate" src="https://img.shields.io/badge/weblate-Translate%20me-F47D42.png" /></a> <a class="reference external image-reference" href="https://runboat.odoo-community.org/builds?repo=OCA/ddmrp&target_branch=16.0"><img alt="Try me on Runboat" src="https://img.shields.io/badge/runboat-Try%20me-875A7B.png" /></a></p>
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<p>Demand Driven Material Requirements Planning is a formal multi-echelon
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planning and execution method developed by Ms. Carol Ptak and Mr. Chad Smith.</p>
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<p>DDMRP combines blended aspects of Material Requirements Planning (MRP),
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Distribution Requirements Planning (DRP) with the pull and visibility
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emphases found in Lean and the Theory of Constraints and the variability
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reduction emphasis of Six Sigma.</p>
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<p>This method has five sequential components:</p>
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<ol class="arabic simple">
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<li><em>Strategic Inventory Positioning</em>. Answers the question “Given our system
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and environment, where should we place inventory to have the best
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protection?” and determines where should decoupling points of inventory be
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placed.</li>
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<li><em>Buffer Profiles and Levels</em>. Determine the amount of protection at those
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decoupling points.</li>
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<li><em>Dynamic Adjustments</em>. Allow the company to adapt buffers to group and
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individual part trait changes over time through the use of several types
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of adjustments.</li>
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<li><em>Demand Driven Planning</em>. Allow to launch purchase orders (POs),
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manufacturing orders (MOs) and Transfer Orders (TOs) based on the priority
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dictated by the buffers.</li>
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<li><em>Visible and Collaborative Execution</em>. These POs, MOs and TOs have to be
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effectively managed to synchronize with the changes that often occur within
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the “execution horizon.”</li>
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</ol>
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<p>These five components work together to greatly dampen, if not eliminate,
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the nervousness of traditional MRP systems and the bullwhip effect in
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complex and challenging environments.</p>
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<p>This approach provides real information about those parts that are
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truly at risk of negatively impacting the planned availability of inventory.</p>
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<p>DDMRP sorts the significant few items that require attention from
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the many parts that are being managed. Under the DDMRP approach,
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fewer planners can make better decisions more quickly. That means companies
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will be better able to leverage their working and human capital.</p>
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<p>Demand Driven Material Requirements Planning is quickly being adopted
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by a wide variety of leading companies across the world.</p>
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<p>Some of the benefits reported by the DDMRP method include:</p>
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<ul class="simple">
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<li>High fill rate performance</li>
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<li>Lead time reductions</li>
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<li>Inventory reductions, while improving customer service</li>
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<li>Eliminate costs related to expedite</li>
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<li>Planners see priorities instead of constantly fighting the conflicting
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messages of MRP</li>
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</ul>
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<p>It is highly recommended to read the book ‘Demand Driven Material
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Requirements Planning (DDMRP)’ by Carol Ptak and Chad Smith.</p>
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<p><strong>Table of contents</strong></p>
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<div class="contents local topic" id="contents">
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<ul class="simple">
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<li><a class="reference internal" href="#installation" id="toc-entry-1">Installation</a></li>
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<li><a class="reference internal" href="#configuration" id="toc-entry-2">Configuration</a><ul>
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<li><a class="reference internal" href="#scheduled-actions" id="toc-entry-3">Scheduled actions</a></li>
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<li><a class="reference internal" href="#decoupled-lead-time-computation" id="toc-entry-4">Decoupled Lead Time computation</a></li>
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</ul>
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</li>
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<li><a class="reference internal" href="#usage" id="toc-entry-5">Usage</a><ul>
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<li><a class="reference internal" href="#buffers" id="toc-entry-6">Buffers</a></li>
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<li><a class="reference internal" href="#buffer-profiles" id="toc-entry-7">Buffer Profiles</a></li>
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<li><a class="reference internal" href="#product-attributes" id="toc-entry-8">Product attributes</a></li>
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<li><a class="reference internal" href="#adu-calculation-methods" id="toc-entry-9">ADU Calculation Methods</a></li>
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</ul>
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</li>
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<li><a class="reference internal" href="#known-issues-roadmap" id="toc-entry-10">Known issues / Roadmap</a></li>
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||
<li><a class="reference internal" href="#changelog" id="toc-entry-11">Changelog</a><ul>
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||
<li><a class="reference internal" href="#section-1" id="toc-entry-12">13.0.1.1.0 (2020-07-01)</a></li>
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<li><a class="reference internal" href="#section-2" id="toc-entry-13">13.0.1.0.0 (2020-06-11)</a></li>
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<li><a class="reference internal" href="#section-3" id="toc-entry-14">11.0.1.3.0 (2019-02-21)</a></li>
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<li><a class="reference internal" href="#section-4" id="toc-entry-15">11.0.1.2.0 (2019-01-29)</a></li>
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<li><a class="reference internal" href="#section-5" id="toc-entry-16">11.0.1.1.0 (2018-08-31)</a></li>
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<li><a class="reference internal" href="#section-6" id="toc-entry-17">11.0.1.0.0 (2018-07-16)</a></li>
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</ul>
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</li>
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<li><a class="reference internal" href="#bug-tracker" id="toc-entry-18">Bug Tracker</a></li>
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||
<li><a class="reference internal" href="#credits" id="toc-entry-19">Credits</a><ul>
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||
<li><a class="reference internal" href="#authors" id="toc-entry-20">Authors</a></li>
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||
<li><a class="reference internal" href="#contributors" id="toc-entry-21">Contributors</a></li>
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||
<li><a class="reference internal" href="#other-credits" id="toc-entry-22">Other credits</a></li>
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||
<li><a class="reference internal" href="#maintainers" id="toc-entry-23">Maintainers</a></li>
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||
</ul>
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||
</li>
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</ul>
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</div>
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<div class="section" id="installation">
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<h2><a class="toc-backref" href="#toc-entry-1">Installation</a></h2>
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<p>We strongly recommend to modify the configuration of the reservation method
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||
to manual in the outgoing operation types (so deliveries
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related to Sales Orders aren’t automatically reserved) and to avoid to
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||
reserve stock for specific moves, buffers are in fact a reservation of stock.
|
||
However, while <strong>reservation is discouraged</strong>, it is still available to be
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||
used, in case of reserved stock be aware that the buffer will be blind to this
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transfers and stock and you are bypassing the DDMRP reordering flow.</p>
|
||
</div>
|
||
<div class="section" id="configuration">
|
||
<h2><a class="toc-backref" href="#toc-entry-2">Configuration</a></h2>
|
||
<div class="section" id="scheduled-actions">
|
||
<h3><a class="toc-backref" href="#toc-entry-3">Scheduled actions</a></h3>
|
||
<ul class="simple">
|
||
<li>Go to <em>Settings > Technical</em>.</li>
|
||
<li>‘DDMRP Buffer ADU calculation’. Computes the Average Daily Usage for all
|
||
Buffers.</li>
|
||
<li>‘Reordering Rule DDMRP calculation’. Computes the Qualified Demand, Net
|
||
Flow Position, Planning and Execution priorities for all Buffers.</li>
|
||
</ul>
|
||
</div>
|
||
<div class="section" id="decoupled-lead-time-computation">
|
||
<h3><a class="toc-backref" href="#toc-entry-4">Decoupled Lead Time computation</a></h3>
|
||
<p>The DLT is automatically computed by the system.</p>
|
||
<p>For manufactured products’ buffers just remember to provide and
|
||
set properly the following information:</p>
|
||
<ul class="simple">
|
||
<li>The <em>Manufacturing Lead Time</em> for the manufactured product. It can be found
|
||
at the product form view under the tab <em>Sales</em>.</li>
|
||
<li>The <em>Delivery Lead Time</em> for the preferred vendor of a product. This is
|
||
important for the products which are purchased and are components in any
|
||
Bill of Materials.</li>
|
||
</ul>
|
||
<p>For purchased/distributed products’ buffers the logic is simpler.</p>
|
||
<ul class="simple">
|
||
<li>In the first place the system will look if there are Vendors for the product,
|
||
if so it will use the <em>Delivery Lead Time</em> of the preferred one.</li>
|
||
<li>In case of absence of vendors, the <em>Lead Time</em> at the bottom of the Buffer
|
||
form view will be used.</li>
|
||
</ul>
|
||
</div>
|
||
</div>
|
||
<div class="section" id="usage">
|
||
<h2><a class="toc-backref" href="#toc-entry-5">Usage</a></h2>
|
||
<p>To easily identify were are you maintaining buffers in your Bill of
|
||
Materials, you will need to first provide location information on the Bills
|
||
of Materials.</p>
|
||
<ul class="simple">
|
||
<li>Go to <em>Manufacturing / Products / Bill of Materials</em> and update the
|
||
‘Location’ in all the Bill of Materials and associated lines,
|
||
indicating where will the parts be placed/used during the manufacturing
|
||
process.</li>
|
||
<li>Print the report ‘BOM Structure’ to display where in your BOM are you
|
||
maintaining buffers, and to identify the Lead Time (LT) of each product, and
|
||
Decouple Lead Time (DLT).</li>
|
||
</ul>
|
||
<div class="section" id="buffers">
|
||
<h3><a class="toc-backref" href="#toc-entry-6">Buffers</a></h3>
|
||
<p>To list the list of inventory buffers, go to one of the following:
|
||
* <em>Inventory / Master Data / Stock Buffer Planning</em>
|
||
* <em>Inventory / Master Data / Reordering Rules</em></p>
|
||
</div>
|
||
<div class="section" id="buffer-profiles">
|
||
<h3><a class="toc-backref" href="#toc-entry-7">Buffer Profiles</a></h3>
|
||
<p>Buffer profiles make maintenance of buffers easier by grouping them in
|
||
profiles. Changes applied to the profiles will be applicable in the
|
||
associated buffer calculations.</p>
|
||
<ul class="simple">
|
||
<li>Go to <em>Inventory / Configuration / Buffer Profiles</em>.</li>
|
||
</ul>
|
||
<p>The Buffer Profile Lead Time Factor influences the size of the Buffer Green
|
||
zone. Items with longer lead times will usually have smaller green zones, which
|
||
will translate in more frequent supply order generation.</p>
|
||
<ul class="simple">
|
||
<li>Go to <em>Inventory / Configuration / Buffer Profile Lead Time Factor</em> to
|
||
chan</li>
|
||
</ul>
|
||
<p>The Buffer Profile Variability Factor influences the size of the Buffer Red
|
||
Safety zone. Items with longer lead times will usually have smaller green
|
||
zones, which will translate in more frequent supply order generation.</p>
|
||
<ul class="simple">
|
||
<li>Go to <em>Inventory / Configuration / Buffer Profile Lead Time Factor</em>.</li>
|
||
</ul>
|
||
<p>Usual factors should range from 0.2 (long lead time) to 0.8 (short lead time).</p>
|
||
</div>
|
||
<div class="section" id="product-attributes">
|
||
<h3><a class="toc-backref" href="#toc-entry-8">Product attributes</a></h3>
|
||
<ul class="simple">
|
||
<li>For manufactured products, go to <em>Manufacturing / Products</em> and
|
||
update the ‘Manufacturing Lead Time’ field, available in the tab <em>Inventory</em>.</li>
|
||
<li>For purchased products, go to go to <em>Purchasing / Products</em> and update the
|
||
<em>Delivery Lead Time</em> for each vendor, available in tab <em>Purchase</em> and section
|
||
<em>Vendors</em>.</li>
|
||
</ul>
|
||
</div>
|
||
<div class="section" id="adu-calculation-methods">
|
||
<h3><a class="toc-backref" href="#toc-entry-9">ADU Calculation Methods</a></h3>
|
||
<p>The Average Daily Usage (ADU) defines the frequency of demand of a product in a
|
||
certain location. It can be computed in different ways, which you can configure
|
||
with ADU calculation methods as follows:</p>
|
||
<ol class="arabic simple">
|
||
<li>Go to <em>Inventory / Configuration / DDMRP / ADU calculation methods</em>.</li>
|
||
<li>Indicate a name, a calculation method (fixed, past-looking,
|
||
future-looking or blended).</li>
|
||
<li>Fill the corresponding period (past, future or both for blended method) to
|
||
specify the length of period consideration (in days).</li>
|
||
<li>Indicate the source of information: stock moves or demand estimates.</li>
|
||
<li>If you use the blended method fill also the <em>Past Factor</em> and
|
||
<em>Future Factor</em>.</li>
|
||
</ol>
|
||
<p>If you do not have prior history of stock moves in your system, it is advised
|
||
to use fixed method or start to work on future estimates. If you have
|
||
past-history of stock moves, best use past-looking method or blended method.</p>
|
||
<p>The ADU is computed every day by default in a background job independently
|
||
from the other buffer fields. This computation can be done with less frequency
|
||
but it is not recommended to run it less than weekly or more than daily.
|
||
Circumstantially, If you need to force the calculation of the ADU go to
|
||
<em>Inventory / Configuration / DDMRP / Run DDMRP</em> and click on
|
||
<em>Run ADU calculation</em>.</p>
|
||
</div>
|
||
</div>
|
||
<div class="section" id="known-issues-roadmap">
|
||
<h2><a class="toc-backref" href="#toc-entry-10">Known issues / Roadmap</a></h2>
|
||
<p>The DDMRP <a class="reference external" href="https://github.com/OCA/ddmrp/issues?q=is%3Aopen+is%3Aissue+label%3Aenhancement">roadmap</a>
|
||
and <a class="reference external" href="https://github.com/OCA/ddmrp/issues?q=is%3Aopen+is%3Aissue+label%3Abug">known issues</a> can
|
||
be found on GitHub.</p>
|
||
</div>
|
||
<div class="section" id="changelog">
|
||
<h2><a class="toc-backref" href="#toc-entry-11">Changelog</a></h2>
|
||
<div class="section" id="section-1">
|
||
<h3><a class="toc-backref" href="#toc-entry-12">13.0.1.1.0 (2020-07-01)</a></h3>
|
||
<p><strong>Features</strong></p>
|
||
<ul class="simple">
|
||
<li><ul class="first">
|
||
<li>New setting <em>Update NFP on Stock Buffers on relevant events</em>.</li>
|
||
<li>New dedicated settings block. (<a class="reference external" href="https://github.com/OCA/ddmrp/issues/50">#50</a>)</li>
|
||
</ul>
|
||
</li>
|
||
</ul>
|
||
</div>
|
||
<div class="section" id="section-2">
|
||
<h3><a class="toc-backref" href="#toc-entry-13">13.0.1.0.0 (2020-06-11)</a></h3>
|
||
<ul class="simple">
|
||
<li>[MIG/REF] Migration of module to v13 and refactor (added new dedicated model
|
||
for stock buffer).</li>
|
||
</ul>
|
||
</div>
|
||
<div class="section" id="section-3">
|
||
<h3><a class="toc-backref" href="#toc-entry-14">11.0.1.3.0 (2019-02-21)</a></h3>
|
||
<ul class="simple">
|
||
<li>[ADD] New chart that depict information about the supply and demand (
|
||
displaying also de order spike threshold and horizon) for a buffer.
|
||
(<a class="reference external" href="https://github.com/OCA/ddmrp/pull/40">#40</a>)</li>
|
||
</ul>
|
||
</div>
|
||
<div class="section" id="section-4">
|
||
<h3><a class="toc-backref" href="#toc-entry-15">11.0.1.2.0 (2019-01-29)</a></h3>
|
||
<ul class="simple">
|
||
<li>[IMP] Performance improvement of execution priority calculation and ADU.
|
||
(<a class="reference external" href="https://github.com/OCA/ddmrp/pull/36">#36</a>)</li>
|
||
<li>[IMP] Use the minimum quantity to adjust the procure recommendation.
|
||
(<a class="reference external" href="https://github.com/OCA/ddmrp/pull/37">#37</a>)</li>
|
||
</ul>
|
||
</div>
|
||
<div class="section" id="section-5">
|
||
<h3><a class="toc-backref" href="#toc-entry-16">11.0.1.1.0 (2018-08-31)</a></h3>
|
||
<ul class="simple">
|
||
<li>[IMP] Implemented Blended ADU calculation method.
|
||
(<a class="reference external" href="https://github.com/OCA/ddmrp/pull/23">#23</a>)</li>
|
||
</ul>
|
||
</div>
|
||
<div class="section" id="section-6">
|
||
<h3><a class="toc-backref" href="#toc-entry-17">11.0.1.0.0 (2018-07-16)</a></h3>
|
||
<ul class="simple">
|
||
<li>Start of the history</li>
|
||
</ul>
|
||
</div>
|
||
</div>
|
||
<div class="section" id="bug-tracker">
|
||
<h2><a class="toc-backref" href="#toc-entry-18">Bug Tracker</a></h2>
|
||
<p>Bugs are tracked on <a class="reference external" href="https://github.com/OCA/ddmrp/issues">GitHub Issues</a>.
|
||
In case of trouble, please check there if your issue has already been reported.
|
||
If you spotted it first, help us to smash it by providing a detailed and welcomed
|
||
<a class="reference external" href="https://github.com/OCA/ddmrp/issues/new?body=module:%20ddmrp%0Aversion:%2016.0%0A%0A**Steps%20to%20reproduce**%0A-%20...%0A%0A**Current%20behavior**%0A%0A**Expected%20behavior**">feedback</a>.</p>
|
||
<p>Do not contact contributors directly about support or help with technical issues.</p>
|
||
</div>
|
||
<div class="section" id="credits">
|
||
<h2><a class="toc-backref" href="#toc-entry-19">Credits</a></h2>
|
||
<div class="section" id="authors">
|
||
<h3><a class="toc-backref" href="#toc-entry-20">Authors</a></h3>
|
||
<ul class="simple">
|
||
<li>ForgeFlow</li>
|
||
</ul>
|
||
</div>
|
||
<div class="section" id="contributors">
|
||
<h3><a class="toc-backref" href="#toc-entry-21">Contributors</a></h3>
|
||
<ul class="simple">
|
||
<li>Jordi Ballester Alomar <<a class="reference external" href="mailto:jordi.ballester@forgeflow.com">jordi.ballester@forgeflow.com</a>></li>
|
||
<li>Lois Rilo Antelo <<a class="reference external" href="mailto:lois.rilo@forgeflow.com">lois.rilo@forgeflow.com</a>></li>
|
||
<li>Guewen Baconnier <<a class="reference external" href="mailto:guewen.baconnier@camptocamp.com">guewen.baconnier@camptocamp.com</a>></li>
|
||
<li>Adria Gil Sorribes <<a class="reference external" href="mailto:adria.gil@forgeflow.com">adria.gil@forgeflow.com</a>></li>
|
||
<li>Christopher Ormaza <<a class="reference external" href="mailto:chris.ormaza@forgeflow.com">chris.ormaza@forgeflow.com</a>></li>
|
||
</ul>
|
||
</div>
|
||
<div class="section" id="other-credits">
|
||
<h3><a class="toc-backref" href="#toc-entry-22">Other credits</a></h3>
|
||
<p>The initial development of this module has been financially supported by:</p>
|
||
<ul class="simple">
|
||
<li>Aleph Objects, Inc.</li>
|
||
</ul>
|
||
</div>
|
||
<div class="section" id="maintainers">
|
||
<h3><a class="toc-backref" href="#toc-entry-23">Maintainers</a></h3>
|
||
<p>This module is maintained by the OCA.</p>
|
||
<a class="reference external image-reference" href="https://odoo-community.org">
|
||
<img alt="Odoo Community Association" src="https://odoo-community.org/logo.png" />
|
||
</a>
|
||
<p>OCA, or the Odoo Community Association, is a nonprofit organization whose
|
||
mission is to support the collaborative development of Odoo features and
|
||
promote its widespread use.</p>
|
||
<p>Current <a class="reference external" href="https://odoo-community.org/page/maintainer-role">maintainers</a>:</p>
|
||
<p><a class="reference external image-reference" href="https://github.com/JordiBForgeFlow"><img alt="JordiBForgeFlow" src="https://github.com/JordiBForgeFlow.png?size=40px" /></a> <a class="reference external image-reference" href="https://github.com/LoisRForgeFlow"><img alt="LoisRForgeFlow" src="https://github.com/LoisRForgeFlow.png?size=40px" /></a> <a class="reference external image-reference" href="https://github.com/ChrisOForgeFlow"><img alt="ChrisOForgeFlow" src="https://github.com/ChrisOForgeFlow.png?size=40px" /></a></p>
|
||
<p>This module is part of the <a class="reference external" href="https://github.com/OCA/ddmrp/tree/16.0/ddmrp">OCA/ddmrp</a> project on GitHub.</p>
|
||
<p>You are welcome to contribute. To learn how please visit <a class="reference external" href="https://odoo-community.org/page/Contribute">https://odoo-community.org/page/Contribute</a>.</p>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
</body>
|
||
</html>
|