How To Fix ATP_SE023 - Reference parameter (reference item) missing: reference document &1

SAP Error Message - Details

• Message type: E = Error

• Message class: ATP_SE - Message class for ATP-Services

• Message number: 023

• Message text: Reference parameter (reference item) missing: reference document &1

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 ATP_SE023 - Reference parameter (reference item) missing: reference document &1 ?

  The SAP error message ATP_SE023, which states "Reference parameter (reference item) missing: reference document &1," typically occurs in the context of Advanced ATP (Available-to-Promise) checks. This error indicates that a reference item or document that is expected in the system is missing or not properly defined.
  Cause:
  
  Missing Reference Document: The error usually arises when a reference document (like a sales order, purchase order, or delivery) is not available or not correctly linked in the system.
  Configuration Issues: There may be configuration issues in the ATP settings or in the way the reference documents are set up.
  Data Inconsistencies: There could be inconsistencies in the master data or transaction data that prevent the system from finding the necessary reference.
  User Input Errors: Incorrect or incomplete data entry when creating or processing documents can lead to this error.
  
  Solution:
  
  Check Reference Document: Verify that the reference document mentioned in the error message (&1) exists in the system. Ensure that it is active and correctly configured.
  Review Document Links: Ensure that the document you are working with is properly linked to the reference document. This may involve checking the item details and ensuring that all necessary fields are filled out.
  Configuration Review: Review the configuration settings for ATP in your SAP system. Ensure that all necessary parameters and settings are correctly defined.
  Data Consistency Check: Run consistency checks on the relevant master data and transaction data to identify and correct any discrepancies.
  User Training: If user input errors are common, consider providing additional training to users on how to correctly enter and manage documents in the system.
  
  Related Information:
  
  Transaction Codes: You may want to use transaction codes like MD04 (Stock/Requirements List) or CO09 (Availability Overview) to check the availability of materials and the status of related documents.
  SAP Notes: Check SAP Notes for any known issues or patches related to ATP errors. SAP frequently updates its knowledge base with solutions to common problems.
  Debugging: If you have access to technical resources, debugging the ATP logic may provide insights into why the reference document is not being recognized.
  Consult Documentation: Review SAP documentation related to Advanced ATP and the specific business processes you are working with to ensure compliance with best practices.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP support team or a technical consultant who can provide more in-depth analysis and assistance.