How To Fix DMU145 - Error during number assignment of an internal number

SAP Error Message - Details

• Message type: E = Error

• Message class: DMU - Digital Mock Up (DMU)

• Message number: 145

• Message text: Error during number assignment of an internal number

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message DMU145 - Error during number assignment of an internal number ?

  The SAP error message DMU145, which indicates "Error during number assignment of an internal number," typically occurs when there is an issue with the number range assignment for internal numbers in the SAP system. This can happen in various contexts, such as during the creation of documents, master data, or other entities that require unique internal identifiers.
  Causes:
  
  Number Range Not Defined: The number range for the specific object may not be defined in the system.
  Number Range Exhaustion: The defined number range may have been exhausted, meaning all available numbers have been assigned.
  Authorization Issues: The user may not have the necessary authorizations to access or use the number range.
  Configuration Issues: There may be configuration issues in the number range settings or the number range object itself.
  System Lock: The number range object may be locked due to a transaction or process that is currently using it.
  
  Solutions:
  
  
  Check Number Range Configuration:
  
  Go to transaction code SNRO (Number Range Objects) and check the configuration for the relevant number range object.
  Ensure that the number range is defined and active.
  
  
  
  Check Number Range Status:
  
  In the same transaction (SNRO), check if the number range has available numbers. If it is exhausted, you may need to extend the range or create a new one.
  
  
  
  Adjust Authorizations:
  
  Ensure that the user has the necessary authorizations to access and use the number range. This can be checked in transaction code SU01 (User Maintenance).
  
  
  
  Unlock Number Range:
  
  If the number range is locked, identify the process that is holding the lock and resolve it. You can use transaction code SM12 to check for locks.
  
  
  
  Consult SAP Notes:
  
  Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP support for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes:
  
  SNRO: Number Range Objects
  SU01: User Maintenance
  SM12: Display and Delete Locks
  
  
  Documentation: Review SAP documentation related to number range management for more detailed guidance on configuration and troubleshooting.
  
  By following these steps, you should be able to identify and resolve the DMU145 error in your SAP system.