How To Fix CS031 - The number range number '&' is invalid for external number assignment

SAP Error Message - Details

• Message type: E = Error

• Message class: CS - Logistics Customizing

• Message number: 031

• Message text: The number range number '&' is invalid for external number assignment

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CS031 - The number range number '&' is invalid for external number assignment ?

  The SAP error message CS031 indicates that there is an issue with the number range that is being used for external number assignment in the system. This error typically occurs when the system is trying to assign a number from a number range that is either not defined, not valid, or not set up for external assignment.
  Cause:
  
  Invalid Number Range: The number range specified in the configuration is either not defined or has been deleted.
  Number Range Not Set for External Assignment: The number range may be defined but is not configured to allow external number assignment.
  Number Range Interval Issues: The intervals for the number range may not be properly set up, leading to gaps or overlaps.
  Authorization Issues: The user may not have the necessary authorizations to access or use the specified number range.
  
  Solution:
  To resolve the CS031 error, you can follow these steps:
  
  
  Check Number Range Configuration:
  
  Go to transaction code SNRO (Number Range Objects).
  Enter the relevant number range object and check if the number range is defined correctly.
  Ensure that the number range is active and has valid intervals.
  
  
  
  Verify External Assignment:
  
  In the number range object configuration, check if the number range is set for external assignment. This can be done by checking the settings in the number range intervals.
  Ensure that the "External" checkbox is selected for the relevant intervals.
  
  
  
  Adjust Number Range Intervals:
  
  If the intervals are not set correctly, you may need to create or adjust them to ensure that they are valid and do not overlap with other ranges.
  
  
  
  Check Authorizations:
  
  Ensure that the user has the necessary authorizations to use the number range. This can be checked in the user roles and profiles.
  
  
  
  Consult Documentation:
  
  If you are unsure about the configuration, refer to SAP documentation or consult with your SAP Basis or functional team for assistance.
  
  
  
  Testing:
  
  After making the necessary changes, test the functionality again to ensure that the error is resolved.
  
  
  
  Related Information:
  
  Transaction Codes: 
  
  SNRO: Number Range Object Maintenance
  SNUM: Number Range Maintenance
  
  
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to number ranges and error CS031.
  User Roles: Review user roles and authorizations to ensure proper access to number range objects.
  
  By following these steps, you should be able to identify and resolve the issue causing the CS031 error in SAP.