How To Fix ME789 - PO item & included in IDoc twice

SAP Error Message - Details

• Message type: E = Error

• Message class: ME - Purchasing: General Messages

• Message number: 789

• Message text: PO item & included in IDoc twice

What causes this issue?

Purchase order item &V1& occurs in several IDOC item segments
simultaneously.
The units of measure or the action codes in these IDOC item segments do
not agree.

How to fix this error?

Get the supplier to ensure that IDOC item segments relating to the same
PO item in these fields agree, or change the IDOC so that these fields
agree with the PO data, and then re-start the process.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message ME789 - PO item & included in IDoc twice ?

  The SAP error message ME789 indicates that a Purchase Order (PO) item is included in an IDoc (Intermediate Document) twice. This can occur during the process of data transfer between systems, particularly when dealing with EDI (Electronic Data Interchange) or other integration scenarios.
  Cause:
  
  
  Duplicate Data: The most common cause is that the same PO item is being sent multiple times in the IDoc. This can happen due to:
  
  Incorrect configuration in the sending system.
  A bug in the application that generates the IDoc.
  Manual errors during data entry or processing.
  
  
  
  IDoc Structure Issues: The structure of the IDoc may not be correctly defined, leading to the same item being referenced multiple times.
  
  
  Data Mapping Errors: If there are issues in the mapping of data from the source system to the IDoc format, it may result in duplicates.
  
  
  Solution:
  
  
  Check IDoc Data: Review the IDoc data to identify where the duplicate entries are occurring. You can use transaction codes like WE02 or WE05 to analyze the IDoc.
  
  
  Correct the Source Data: If the source system is sending duplicate data, correct the data in the source system to ensure that each PO item is sent only once.
  
  
  Review IDoc Configuration: Check the configuration settings for the IDoc type being used. Ensure that the mapping and structure are correctly defined to prevent duplicates.
  
  
  Error Handling: Implement error handling in the integration process to catch and manage duplicates before they reach the SAP system.
  
  
  Testing: After making changes, conduct thorough testing to ensure that the issue is resolved and that no duplicates are being sent in the IDoc.
  
  
  Consult Documentation: Refer to SAP documentation or support notes related to the specific IDoc type and message type you are working with for additional guidance.
  
  
  Related Information:
  
  IDoc Types: Familiarize yourself with the specific IDoc type you are using (e.g., ORDERS, INVOIC) and its structure.
  Transaction Codes: Use transaction codes like WE02 (Display IDoc) and WE05 (IDoc List) to monitor and analyze IDocs.
  SAP Notes: Check SAP Notes for any known issues or patches related to the IDoc type you are working with.
  Integration Scenarios: Understand the integration scenario (e.g., EDI, ALE) to better diagnose the root cause of the issue.
  
  By following these steps, you should be able to identify the cause of the ME789 error and implement a solution to prevent it from occurring in the future.