How To Fix SIW078 - Namespace mismatch between &1 and &2 during creation of function module

SAP Error Message - Details

• Message type: E = Error

• Message class: SIW - Service Implementation Workbench

• Message number: 078

• Message text: Namespace mismatch between &1 and &2 during creation of function module

What causes this issue?

You have used different namespaces for the specified function and for
the function group.

System Response

The system terminated generation of the function module but other
objects may have been generated.

How to fix this error?

To ensure that the namespace, function group, and function name are
compatible, you need to do one (or more) of the following:
If specified in a context variable of the current configuration, change
the namespace definition.
Choose another function name.
Choose another function group.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SIW078 - Namespace mismatch between &1 and &2 during creation of function module ?

  The SAP error message SIW078 indicates a namespace mismatch between two objects when you are trying to create a function module. This typically occurs when the function module you are trying to create is in a different namespace than the one specified in the system or the one that is expected.
  Cause:
  
  Namespace Configuration: The function module is being created in a namespace that does not match the expected namespace for the project or the package.
  Package Assignment: The package assigned to the function module may not be compatible with the namespace of the function module.
  Transport Layer Issues: If you are working in a transport layer that has specific namespace rules, this can lead to mismatches.
  
  Solution:
  
  Check Namespace: Verify the namespace of the function module you are trying to create. Ensure that it matches the expected namespace for your project or package.
  Change Package: If the function module is assigned to a package, check if the package is correct. You may need to change the package to one that matches the namespace.
  Use Correct Naming Conventions: Ensure that you are following the correct naming conventions for function modules in your development environment.
  Consult Documentation: Review any documentation or guidelines provided by your organization regarding namespace usage and function module creation.
  Contact Basis Team: If you are unsure about the namespace configuration or if you suspect a system issue, contact your SAP Basis team for assistance.
  
  Related Information:
  
  Namespaces in SAP: SAP uses namespaces to organize objects and avoid naming conflicts. Custom development typically occurs in a specific namespace assigned to a development project.
  Function Module Creation: When creating function modules, ensure that you are in the correct development environment (e.g., development client) and that you have the necessary authorizations.
  Transport Management: If you are working with transport requests, ensure that the transport layer is correctly configured to handle the namespaces involved.
  
  By following these steps, you should be able to resolve the SIW078 error and successfully create your function module.