How To Fix RU166 - Error in number assignment for error document (goods movement)

SAP Error Message - Details

• Message type: E = Error

• Message class: RU - Messages for order completion confirmation

• Message number: 166

• Message text: Error in number assignment for error document (goods movement)

What causes this issue?

When assigning a number for the document for the incorrect goods
movement in client &V1& an error occurred. It is possible that the
number range has not been fully maintained.

How to fix this error?

You should check the definition of the number range 01 for the number
range object AFFW_NR.
Start transaction SNUM, supply field NRIV-OBJECT with AFFW_NR.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RU166 - Error in number assignment for error document (goods movement) ?

  The SAP error message RU166, which indicates "Error in number assignment for error document (goods movement)," typically occurs during the processing of goods movements, such as goods receipts or goods issues. This error is related to the number assignment for error documents, which are generated when there is an issue with the goods movement process.
  Causes:
  
  
  Number Range Issues: The most common cause of this error is that the number range for the error documents is not properly defined or has been exhausted. Each document type in SAP requires a defined number range to generate unique document numbers.
  
  
  Configuration Errors: There may be configuration issues in the document type settings or number range settings in the SAP system.
  
  
  Authorization Issues: Sometimes, the user may not have the necessary authorizations to create or access the error documents.
  
  
  System Bugs or Inconsistencies: Occasionally, bugs or inconsistencies in the SAP system can lead to this error.
  
  
  Solutions:
  
  
  Check Number Range Configuration:
  
  Go to transaction code SNRO (Number Range Objects).
  Look for the relevant number range object associated with error documents for goods movements (e.g., EWM or IM).
  Ensure that the number range is defined correctly and that there are available numbers in the range.
  
  
  
  Adjust Number Range:
  
  If the number range is exhausted, you can extend it by adding more numbers. This can be done in the same SNRO transaction.
  Make sure to activate the number range after making changes.
  
  
  
  Review Document Type Settings:
  
  Check the configuration for the document type used in the goods movement. This can be done in the configuration settings under Materials Management (MM) or Inventory Management (IM).
  Ensure that the document type is correctly linked to the number range.
  
  
  
  Check User Authorizations:
  
  Verify that the user has the necessary authorizations to create and manage error documents. This can be checked in transaction SU53 or by reviewing the user's role assignments.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error. There may be patches or updates that resolve known issues.
  
  
  
  System Restart:
  
  In some cases, a system restart or a refresh of the application server may resolve temporary inconsistencies.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  SNRO - Number Range Objects
  OMJJ - Configure Movement Types
  MB1A, MB1B, MB1C - Goods Movement transactions
  
  
  
  Documentation: Review SAP documentation related to goods movements and error handling for more detailed guidance.
  
  
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  
  
  If the problem persists after trying the above solutions, it may be necessary to involve your SAP Basis or technical team for further investigation.