How To Fix ATP_SE048 - Item ID &1 used already; cannot be used twice in the same document

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 048

• Message text: Item ID &1 used already; cannot be used twice in the same document

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_SE048 - Item ID &1 used already; cannot be used twice in the same document ?

  The SAP error message ATP_SE048 indicates that an item ID is being used more than once in the same document, which is not allowed. This typically occurs in scenarios involving Advanced ATP (Available-to-Promise) checks, where each item in a document (like a sales order or purchase order) must have a unique identifier.
  Cause:
  
  Duplicate Item Entry: The most common cause is that the same item has been entered multiple times in the same document.
  Copying Documents: If a document is copied from another document, it may inadvertently include duplicate item IDs.
  Data Entry Errors: Manual data entry errors can lead to the same item being added multiple times.
  Configuration Issues: In some cases, system configuration or custom developments may lead to unexpected behavior regarding item IDs.
  
  Solution:
  
  Check Document for Duplicates: Review the document in question to identify if the same item ID has been entered more than once. Remove any duplicates.
  Use Unique Item IDs: Ensure that each item in the document has a unique identifier. If you need to add the same item multiple times, consider using different item numbers or line items.
  Review Copying Procedures: If the document was created by copying another document, check the source document for duplicates and correct them before copying.
  Consult with IT/Development Team: If the issue persists and seems to be related to system configuration or custom developments, consult with your SAP technical team to investigate further.
  
  Related Information:
  
  Transaction Codes: You may want to check the document using transaction codes like VA03 (Display Sales Order), ME23N (Display Purchase Order), etc.
  SAP Notes: Check SAP Notes for any known issues or patches related to ATP and item ID handling.
  Documentation: Review SAP documentation on Advanced ATP and item management for best practices and guidelines.
  User Training: Ensure that users are trained on proper data entry procedures to minimize the risk of duplicate entries.
  
  By following these steps, you should be able to resolve the ATP_SE048 error and prevent it from occurring in the future.