How To Fix WU329 - Material: & Un: & Plant: & -> item category does not match supply source

WU329 - Overview

• Message type: E = Error

• Message class: WU - Promotion management messages

• Message number: 329

• Message text: Material: & Un: & Plant: & -> item category does not match supply source

What causes this issue?

During supply source determination, the material named in the message,
in the plant named in the message, is assigned a source of supply which
does not match the item category of the material.
In the allocation table, the item category of the material controls how
the material is procured and delivered to the plants.
&EXAMPLES&
Procurement from an external vendor and delivery via a distribution
center
Order placed with external vendor for direct delivery by the vendor
Delivery from the distribution center without external procurement
Different item categories may also be needed to differentiate between
the type of delivery document for deliveries from the distribution
center (e.g. stock transport order, delivery without purchase order).
Depending on the item category, selection of a vendor is limited. For
example, a distribution center cannot be entered as the source of
supply if the item category is 'third-party delivery'.

System Response

The allocation table cannot be generated for the material named in the
message in the unit of measure named in the message.

How to fix this error?

Change the item category in the overview screen, or change the sources
of supply for each plant in supply source determination (subsequent
processing).

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WU329 - Material: & Un: & Plant: & -> item category does not match supply source ?

  The SAP error message WU329 indicates that there is a mismatch between the item category of a material and the supply source defined in the system. This typically occurs during the procurement process, such as when creating a purchase order or a purchase requisition. Here’s a breakdown of the cause, potential solutions, and related information for this error:
  
  Cause:
  
  Item Category Mismatch: The item category defined in the material master or the purchase order does not correspond to the supply source (vendor, plant, etc.) that is being referenced.
  Material Master Configuration: The material master may not be set up correctly for the specific plant or purchasing organization.
  Source List Issues: If a source list is maintained for the material, it may not include the correct item category or may not be configured properly.
  Purchasing Info Record: The purchasing info record for the material and vendor may not be set up correctly, leading to a mismatch.
  Document