How To Fix WB877 - The structures you have selected do not use the same layout module

SAP Error Message - Details

• Message type: E = Error

• Message class: WB - Messages for assortment list

• Message number: 877

• Message text: The structures you have selected do not use the same layout module

What causes this issue?

If the structure of the layout module and a description exist, they
must relate to the same layout module.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WB877 - The structures you have selected do not use the same layout module ?

  The SAP error message WB877 indicates that the structures you are trying to use in a particular operation (such as a report or a data transfer) do not share the same layout module. This typically occurs in the context of SAP BW (Business Warehouse) or when working with data models that involve multiple InfoObjects or data sources.
  Cause:
  The error arises when you attempt to combine or compare two or more structures (like InfoObjects, DataSources, or queries) that are not compatible due to differences in their layout modules. Layout modules define how data is structured and presented, and if the selected structures do not align in this regard, SAP will throw this error.
  Solution:
  To resolve the WB877 error, you can take the following steps:
  
  
  Check Layout Modules: Verify the layout modules of the structures you are trying to use. Ensure that they are the same. You can do this by checking the properties of each structure in the SAP BW modeling tools.
  
  
  Modify Structures: If the structures are indeed different, you may need to modify one or both of them to ensure they use the same layout module. This may involve changing the data model or the way the InfoObjects are defined.
  
  
  Use Compatible Structures: If modifying the structures is not feasible, consider using different structures that are compatible with each other. This may involve creating new InfoObjects or data sources that share the same layout.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on layout modules and how to manage them within your BW environment.
  
  
  Testing: After making changes, test the operation again to ensure that the error has been resolved.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  SAP Community: Engage with the SAP Community forums where other users may have encountered similar issues and can provide insights or solutions.
  Training and Documentation: Consider reviewing training materials or documentation related to SAP BW modeling and layout modules to better understand how to manage structures effectively.
  
  By following these steps, you should be able to resolve the WB877 error and proceed with your SAP operations.