How To Fix /SAPTRX/ASC055 - Sequence number is initial; assign unique sequence number

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPTRX/ASC -

• Message number: 055

• Message text: Sequence number is initial; assign unique sequence 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 /SAPTRX/ASC055 - Sequence number is initial; assign unique sequence number ?

  The SAP error message /SAPTRX/ASC055 Sequence number is initial; assign unique sequence number typically occurs in the context of the SAP Advanced Business Application Programming (ABAP) environment, particularly when dealing with transaction data or when processing certain types of documents.
  Cause:
  This error indicates that a sequence number, which is expected to be unique for a particular transaction or document, has not been assigned or is set to an initial value (often zero or blank). This can happen due to several reasons, including:
  
  Missing Configuration: The system may not be properly configured to generate sequence numbers for the specific transaction or document type.
  Data Entry Error: A user may have attempted to create or process a transaction without providing a valid sequence number.
  Custom Development Issues: If there are custom programs or enhancements in place, they may not be correctly handling the assignment of sequence numbers.
  System Bugs: There may be bugs or issues in the SAP system that prevent the proper assignment of sequence numbers.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Configuration:
  
  Ensure that the relevant configuration settings for sequence number generation are correctly set up in the system. This may involve checking the configuration for the specific module or transaction you are working with.
  
  
  
  Assign Sequence Number:
  
  If you are manually entering data, ensure that you provide a valid and unique sequence number when prompted. If the system is supposed to generate this number automatically, check the relevant settings.
  
  
  
  Review Custom Code:
  
  If there are custom developments involved, review the code to ensure that it correctly assigns a sequence number before processing the transaction.
  
  
  
  Check for Updates:
  
  Ensure that your SAP system is up to date with the latest patches and updates, as this may resolve any underlying bugs causing the issue.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to the specific transaction or module to see if there are any known issues or additional configuration steps required.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP support for further assistance. They may provide insights or patches specific to your version of SAP.
  
  
  
  Related Information:
  
  Transaction Codes: Depending on the context of the error, you may want to look into transaction codes related to document processing, such as FB01 (Post Document), ME21N (Create Purchase Order), etc.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error message or provide guidance on configuration.
  Community Forums: Check SAP Community forums or other user groups for discussions related to this error, as other users may have encountered and resolved similar issues.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.