How To Fix /ISDFPS/FDPDAMPO159 - Serial number &1 has already been reserved by purchase requisition &2

SAP Error Message - Details

• Message type: E = Error

• Message class: /ISDFPS/FDPDAMPO -

• Message number: 159

• Message text: Serial number &1 has already been reserved by purchase requisition &2

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 /ISDFPS/FDPDAMPO159 - Serial number &1 has already been reserved by purchase requisition &2 ?

  The SAP error message /ISDFPS/FDPDAMPO159 indicates that a serial number has already been reserved by a purchase requisition. This typically occurs in scenarios where serial numbers are managed for items in inventory, and the system is enforcing the uniqueness of serial numbers across different transactions.
  Cause:
  
  
  Serial Number Reservation: The serial number you are trying to use has already been reserved for another purchase requisition. This can happen if:
  
  The serial number is already assigned to a different document.
  There is an attempt to reserve the same serial number for multiple purchase requisitions.
  
  
  
  Concurrency Issues: If multiple users or processes are trying to reserve the same serial number simultaneously, it can lead to this error.
  
  
  Incorrect Data Entry: Sometimes, manual entry errors or incorrect data in the system can lead to conflicts in serial number assignments.
  
  
  Solution:
  
  
  Check Existing Reservations: 
  
  Use transaction codes like MB52 or MB5B to check the current status of the serial number and see which purchase requisition it is reserved for.
  Identify the purchase requisition that is currently using the serial number.
  
  
  
  Use a Different Serial Number: If the serial number is already reserved and cannot be released, consider using a different serial number for your transaction.
  
  
  Release the Reservation: If you have the necessary permissions and it is appropriate to do so, you can release the reservation of the serial number from the existing purchase requisition. This can be done through the relevant transaction (e.g., ME22N for modifying purchase requisitions).
  
  
  Check for System Updates: Ensure that your SAP system is up to date, as sometimes bugs or issues in earlier versions can lead to unexpected behavior.
  
  
  Consult with Your SAP Support Team: If the issue persists, it may be beneficial to consult with your SAP support team or technical team to investigate further. They can check for any underlying issues in the configuration or data integrity.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as ME21N (Create Purchase Order), ME22N (Change Purchase Order), and MB1A (Goods Withdrawal) to manage purchase requisitions and inventory.
  Serial Number Management: Understand how serial number management works in your SAP environment, including settings in the material master and configuration in the inventory management module.
  Documentation: Refer to SAP documentation or help files for detailed information on serial number management and error handling.
  
  By following these steps, you should be able to resolve the error and proceed with your transaction.