How To Fix 5W159 - Same key (ID) is only allowed with same source and target object type.

SAP Error Message - Details

• Message type: E = Error

• Message class: 5W - Messages for PD (Particularly Workflow)

• Message number: 159

• Message text: Same key (ID) is only allowed with same source and target object type.

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.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message 5W159 - Same key (ID) is only allowed with same source and target object type. ?

  The SAP error message 5W159 indicates that there is an issue with the data being processed, specifically that the same key (ID) is being used for different source and target object types. This typically occurs in scenarios involving data migration, data replication, or when working with master data in SAP systems.
  Cause:
  The error arises when:
  
  You are trying to map or transfer data where the same identifier (key) is being used for different object types (e.g., a customer ID being used for both a customer and a vendor).
  The system expects that the same key should only be associated with the same type of object, and when it encounters a mismatch, it raises this error.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Data Mapping: Review the data mapping configuration to ensure that the same key is not being assigned to different object types. Make sure that each key is unique to its respective object type.
  
  
  Data Cleansing: If you are migrating or importing data, ensure that the data does not contain duplicates or incorrect mappings. Cleanse the data to ensure that each key is correctly associated with its intended object type.
  
  
  Review Configuration: If you are using a specific SAP module or tool (like SAP Data Services, SAP S/4HANA, etc.), check the configuration settings to ensure that they are set up correctly to handle the data types you are working with.
  
  
  Consult Documentation: Refer to the SAP documentation or help resources related to the specific module you are working with. There may be specific guidelines or best practices for handling keys and object types.
  
  
  Testing: After making changes, conduct tests to ensure that the error does not reoccur. This may involve running the data transfer or migration process in a test environment first.
  
  
  Seek Support: If the issue persists, consider reaching out to SAP support or consulting with an SAP expert who can provide more tailored assistance based on your specific scenario.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional context.
  Transaction Codes: Familiarize yourself with transaction codes related to data migration or master data management in SAP, as they may provide additional tools for troubleshooting.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.