How To Fix UA_SM1063 - The sequence number must be unique

SAP Error Message - Details

• Message type: E = Error

• Message class: UA_SM1 - Structure Maintenance

• Message number: 063

• Message text: The sequence number must be unique

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message UA_SM1063 - The sequence number must be unique ?

  The SAP error message UA_SM1063, which states "The sequence number must be unique," typically occurs in scenarios where a sequence number is expected to be unique within a certain context, such as in document processing, transaction entries, or data records. This error can arise in various modules, including Sales and Distribution (SD), Materials Management (MM), or others where sequence numbers are utilized.
  Cause:
  
  
  Duplicate Sequence Numbers: The most common cause of this error is that the system has detected a duplicate sequence number in the data being processed. This can happen if:
  
  The same sequence number is being used for multiple entries.
  There is a data entry error where the same number is mistakenly entered more than once.
  Data was imported or uploaded into the system with non-unique sequence numbers.
  
  
  
  Configuration Issues: In some cases, the configuration settings for number ranges or sequence numbers may not be set up correctly, leading to conflicts.
  
  
  Concurrency Issues: If multiple users or processes are trying to create records simultaneously, it may lead to a situation where the same sequence number is generated for different transactions.
  
  
  Solution:
  
  
  Check for Duplicates: Review the entries or data being processed to identify any duplicate sequence numbers. Ensure that each entry has a unique sequence number.
  
  
  Adjust Number Ranges: If the issue is related to number range configuration, check the settings in the relevant configuration area (e.g., SPRO settings for number ranges) to ensure that they are set up correctly and that there are no overlaps.
  
  
  Data Validation: Implement validation checks in your data entry processes to prevent duplicates from being entered in the first place.
  
  
  Review Custom Code: If there are any custom programs or enhancements that generate sequence numbers, review the logic to ensure that it correctly generates unique numbers.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to the specific module you are working with for any additional guidance or known issues.
  
  
  Contact SAP Support: If the issue persists and you cannot identify the cause, consider reaching out to SAP support for assistance. They may provide insights based on the specific context of your implementation.
  
  
  Related Information:
  
  Transaction Codes: Depending on the module, you may need to use specific transaction codes to check number ranges or entries (e.g., SNRO for number range objects).
  SAP Notes: Search for relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  User Forums: Check SAP community forums or other user groups for similar issues and solutions shared by other users.
  
  By following these steps, you should be able to identify the cause of the UA_SM1063 error and implement a solution to resolve it.