How To Fix MW666 - &1 is not a valid follow-on document category

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 666

• Message text: &1 is not a valid follow-on document category

What causes this issue?

You entered a follow-on document catgory that is not valid.
The following follow-on documents can be generated for an allocation:
Vendor purchase orders
Warehouse orders
Deliveries

System Response

The combination of selection criteria cannot be created.

How to fix this error?

Select a valid follow-on document category.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MW666 - &1 is not a valid follow-on document category ?

  The SAP error message "MW666 &1 is not a valid follow-on document category" typically occurs in the context of material management and inventory management processes. This error indicates that the system is unable to recognize the specified document category as a valid follow-on document for the operation you are trying to perform.
  
  Cause:
  
  Invalid Document Category: The document category you are trying to use does not exist or is not configured correctly in the system.
  
  Configuration Issues: The follow-on document category may not be set up in the customizing settings of SAP.
  Data Entry Error: There may be a typographical error in the document category you are trying to enter.
  Authorization Issues: The user may not have the necessary authorizations to access or create the specified document category.
  
  
  Solution:
  
  
  Check Document Category: Verify that the document category you are trying to use is valid. You can do this by checking the configuration in the SAP system.
  
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