How To Fix MW621 - &1 &2: &3. Allocation rule processing not possible

SAP Error Message - Details

• Message type: E = Error

• Message class: MW - Messages IS-R / Allocation Tables

• Message number: 621

• Message text: &1 &2: &3. Allocation rule processing not possible

What causes this issue?

You want to go from an allocation table item to processing an
allocation rule. This is not possible. This can have one of the
following reasons:

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

The item was generated from a promotion.
Only certain data (such as quantities or dates) can be changed for
items referring to a promotion.
Materials and plants cannot be changed, as the system has to ensure
that the material and the plants concerned take part in the promotion.
You therefore are not able to change the allocation rule or the plant
groups in the item.
The status does not allow the allocation rule to be processed.
If follow-on documents exist for this item, any changes to the
allocation rule do not apply tor the item.

System Response

INCLUDE ISR_VERARBEITUNG

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MW621 - &1 &2: &3. Allocation rule processing not possible ?

  The SAP error message MW621 typically indicates an issue with the allocation rule processing in the context of inventory management or material management. The message format you provided includes placeholders (&1, &2, &3) that would be replaced with specific details relevant to the error encountered.
  Cause:
  The error MW621 can occur due to several reasons, including but not limited to:
  
  Missing Allocation Rules: The system may not have the necessary allocation rules defined for the material or the movement type being processed.
  Incorrect Configuration: There may be configuration issues in the allocation rule settings or in the related master data.
  Data Inconsistencies: There could be inconsistencies in the data related to the material, such as missing or incorrect master data.
  Stock Type Issues: The stock type being processed may not be compatible with the allocation rules defined.
  Authorization Issues: The user may not have the necessary authorizations to perform the allocation.
  
  Solution:
  To resolve the MW621 error, you can take the following steps:
  
  
  Check Allocation Rules: Verify that the allocation rules are correctly defined for the material and movement type. You can do this by navigating to the relevant configuration settings in SAP.
  
  
  Review Configuration: Ensure that the configuration for allocation rules is set up correctly in the system. This may involve checking the settings in the IMG (Implementation Guide) under Inventory Management or Material Management.
  
  
  Validate Master Data: Check the master data for the material in question. Ensure that all necessary fields are filled out correctly and that there are no inconsistencies.
  
  
  Examine Stock Types: Make sure that the stock type you are trying to process is compatible with the allocation rules. If necessary, adjust the stock type or the allocation rules accordingly.
  
  
  Check Authorizations: Ensure that the user has the necessary authorizations to perform the allocation. If not, contact your SAP security administrator to grant the required permissions.
  
  
  Consult SAP Notes: Look for any relevant SAP Notes that may address this specific error. SAP Notes often provide additional insights or patches that can resolve known issues.
  
  
  Debugging: If the issue persists, consider debugging the process to identify the exact point of failure. This may require assistance from a technical consultant.
  
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes such as OMIY (for allocation rule maintenance) or MMBE (to check stock overview) to investigate further.
  SAP Documentation: Refer to the official SAP documentation for detailed information on allocation rules and inventory management processes.
  Community Forums: Check SAP community forums or other user groups for similar issues and solutions shared by other users.
  
  If the problem continues after following these steps, it may be beneficial to engage with SAP support or a qualified SAP consultant for further assistance.