How To Fix /ISDFPS/MM843 - No predecessor purchase requisition exists

SAP Error Message - Details

• Message type: E = Error

• Message class: /ISDFPS/MM -

• Message number: 843

• Message text: No predecessor purchase requisition 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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /ISDFPS/MM843 - No predecessor purchase requisition exists ?

  The SAP error message /ISDFPS/MM843 No predecessor purchase requisition exists typically occurs in the context of the SAP Integrated Business Planning (IBP) or SAP Materials Management (MM) modules. This error indicates that the system is unable to find a predecessor purchase requisition that is required for the current operation you are trying to perform, such as creating a purchase order or processing a purchase requisition.
  Causes:
  
  Missing Predecessor Requisition: The most common cause is that the purchase requisition that should precede the current transaction does not exist in the system.
  Incorrect Configuration: There may be configuration issues in the system that prevent the proper linkage between purchase requisitions and subsequent documents.
  Data Entry Errors: There could be errors in data entry, such as incorrect item numbers or missing fields that are required for the system to recognize the predecessor requisition.
  Document Flow Issues: The document flow may not be properly maintained, leading to the inability to trace back to the predecessor requisition.
  
  Solutions:
  
  Check for Existing Purchase Requisitions: Verify if the predecessor purchase requisition exists in the system. You can do this by using transaction codes like ME53N (Display Purchase Requisition) to search for the requisition.
  Create the Missing Requisition: If the predecessor requisition does not exist, you may need to create it manually before proceeding with the current transaction.
  Review Configuration Settings: Check the configuration settings in the SAP system to ensure that the linkage between purchase requisitions and other documents is correctly set up.
  Correct Data Entry: Ensure that all required fields are filled out correctly and that the item numbers and other identifiers are accurate.
  Consult Documentation: Review any relevant documentation or user manuals for your specific SAP implementation to understand the expected document flow and requirements.
  Contact Support: If the issue persists, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as ME51N (Create Purchase Requisition), ME52N (Change Purchase Requisition), and ME53N (Display Purchase Requisition).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Roles and Authorizations: Ensure that the user has the necessary authorizations to create or modify purchase requisitions and related documents.
  Training and Documentation: Consider training sessions or reviewing documentation related to the procurement process in SAP to better understand the workflow and requirements.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.