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

CS031 - Overview

• 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

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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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