How To Fix /PF1/MSG_PO_GENERAL019 - The sequence number already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: /PF1/MSG_PO_GENERAL -

• Message number: 019

• Message text: The sequence number already exists

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 /PF1/MSG_PO_GENERAL019 - The sequence number already exists ?

  The SAP error message /PF1/MSG_PO_GENERAL019 indicates that there is a duplicate sequence number in the purchase order (PO) processing. This typically occurs when you are trying to create or modify a purchase order and the system detects that the sequence number you are trying to use already exists for another item in the same purchase order or in the same document type.
  Cause:
  
  Duplicate Entry: The most common cause is that the sequence number you are trying to assign to a line item in the purchase order is already in use for another line item.
  Data Migration Issues: If data has been migrated from another system or if there have been manual entries, it is possible that duplicate sequence numbers were inadvertently created.
  Incorrect Configuration: There may be issues with the configuration of the document types or number ranges in the system.
  
  Solution:
  
  Check Existing Entries: Review the purchase order to see if the sequence number is already assigned to another line item. You can do this by displaying the purchase order and checking the line items.
  Change Sequence Number: If you find that the sequence number is indeed duplicated, you can change the sequence number for the line item you are trying to create or modify.
  Review Number Ranges: Check the configuration of number ranges for the purchase order document type to ensure that they are set up correctly and that there are no overlaps.
  Data Cleanup: If the issue is due to data migration, you may need to clean up the data to remove duplicates or adjust the sequence numbers accordingly.
  Consult Documentation: Refer to SAP documentation or consult with your SAP support team for specific guidance related to your system configuration.
  
  Related Information:
  
  Transaction Codes: You can use transaction codes like ME21N (Create Purchase Order) or ME22N (Change Purchase Order) to view and modify purchase orders.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  User Authorization: Ensure that you have the necessary authorizations to create or modify purchase orders in the system.
  
  If the problem persists after trying the above solutions, it may be beneficial to involve your SAP support team or consult with an SAP expert for further assistance.