How To Fix R8331 - Mapping of dictionary type & to ABAP type is not possible in source syst.

SAP Error Message - Details

• Message type: E = Error

• Message class: R8 - Messages from the meta data generation

• Message number: 331

• Message text: Mapping of dictionary type & to ABAP type is not possible in source syst.

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 R8331 - Mapping of dictionary type & to ABAP type is not possible in source syst. ?

  The SAP error message R8331, "Mapping of dictionary type & to ABAP type is not possible in source system," typically occurs during data transfer or when working with data dictionary objects in SAP. This error indicates that there is a mismatch between the data types defined in the source system and the expected ABAP types in the target system.
  Cause:
  
  Data Type Mismatch: The source system has a dictionary type that cannot be directly mapped to an ABAP type in the target system. This can happen if the source system uses a custom or non-standard data type that does not have a corresponding ABAP type.
  Incompatible Structures: If the structure of the data being transferred does not match the expected structure in the target system, this error can occur.
  Version Differences: Different versions of SAP systems may have variations in how data types are defined, leading to incompatibility.
  Transport Issues: If the transport of objects between systems is not done correctly, it may lead to missing or incompatible data types.
  
  Solution:
  
  Check Data Types: Review the data types in the source system and ensure they are compatible with the target system. You may need to adjust the data types in the source system or create a mapping in the target system.
  Modify Data Dictionary Objects: If you have access, you can modify the data dictionary objects in the source system to use standard ABAP types or create a compatible mapping.
  Use ABAP Dictionary: If you are using custom types, consider using standard ABAP types or structures that are known to be compatible with the target system.
  Update Transport Requests: Ensure that all relevant transport requests are correctly updated and that all necessary objects are included in the transport.
  Consult Documentation: Check SAP documentation or notes related to the specific data types you are working with for any known issues or recommendations.
  Engage SAP Support: If the issue persists, consider reaching out to SAP support for assistance, especially if it involves complex data types or custom developments.
  
  Related Information:
  
  SAP Notes: Search for relevant SAP Notes that may address this specific error or provide guidance on data type compatibility.
  Data Dictionary (SE11): Use transaction SE11 to review and modify data dictionary objects.
  ABAP Development: Familiarize yourself with ABAP data types and structures to better understand how to resolve mapping issues.
  Testing: After making changes, conduct thorough testing to ensure that the data transfer works as expected without further errors.
  
  By addressing the underlying cause of the error and ensuring compatibility between the source and target systems, you can resolve the R8331 error effectively.