How To Fix B1045 - Application function module & terminated with invalid exception.

B1045 - Overview

• Message type: E = Error

• Message class: B1 - ALE group messages

• Message number: 045

• Message text: Application function module & terminated with invalid exception.

What causes this issue?

The application function module &v1& for the inbound IDoc reported an
invalid exception.

How to fix this error?

Please get in touch with your SAP consultant.

Error message extract from SAP system. Copyright SAP SE.

B1045 - Details

• The SAP error message B1045, which states that an application function module has terminated with an invalid exception, typically indicates that there is an issue with the execution of a function module in the SAP system. This can occur for various reasons, including programming errors, data inconsistencies, or issues with the configuration of the function module.
  Causes:
  
  Programming Errors: There may be a bug in the ABAP code of the function module that is causing it to terminate unexpectedly.
  Data Issues: The input data being passed to the function module may be invalid or not in the expected format, leading to exceptions.
  Configuration Problems: The function module may not be properly configured, or there may be missing dependencies.
  Authorization Issues: The user executing the function may not have the necessary authorizations to perform the action.
  System Environment: Issues with the SAP system environment, such as memory shortages or database connectivity problems, can also lead to this