How To Fix MODEL031 - Relation class and source class are in different areas

SAP Error Message - Details

• Message type: E = Error

• Message class: MODEL - Modeling

• Message number: 031

• Message text: Relation class and source class are in different areas

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 MODEL031 - Relation class and source class are in different areas ?

  The SAP error message MODEL031 indicates that there is a mismatch between the relation class and the source class in the context of the data model. This typically occurs in the context of SAP's data modeling tools, such as when working with Business Object Processing Framework (BOPF) or similar modeling environments.
  Cause:
  The error arises when you attempt to create or modify a relationship between two classes that are defined in different areas or contexts. In SAP, classes can be organized into different areas, and relationships must be established between classes that are in the same area.
  Solution:
  To resolve the MODEL031 error, you can take the following steps:
  
  
  Check Class Areas: Verify the areas of both the relation class and the source class. Ensure that both classes are defined in the same area. You can do this by checking the class definitions in the relevant modeling tool.
  
  
  Adjust Class Definitions: If the classes are indeed in different areas, you may need to either:
  
  Move one of the classes to the same area as the other.
  Create a new relationship that is valid between classes in the same area.
  
  
  
  Review Relationships: If you are modifying an existing relationship, ensure that the relationship is valid and that both classes are intended to interact with each other.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific guidelines on class areas and relationships in the context of your specific SAP module or tool.
  
  
  Testing: After making the necessary adjustments, test the changes to ensure that the error is resolved and that the relationship functions as expected.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might provide additional insights or updates related to this error.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Training and Documentation: Consider reviewing training materials or documentation related to data modeling in SAP to better understand the concepts of areas and relationships.
  
  By following these steps, you should be able to identify the cause of the MODEL031 error and implement a solution to resolve it.