How To Fix W_001 - Internal error when calling a function module

SAP Error Message - Details

• Message type: E = Error

• Message class: W_ - Upload CRM -> R3 BOMs / Structured Materials

• Message number: 001

• Message text: Internal error when calling a function module

What causes this issue?

When a function module was called up, an error was recognised, and an
exception was triggered.

System Response

Processing cannot be carried out.

How to fix this error?

This is a system error. Inform your system administrator. The error has
occurred in function module &V1&. The return value was &V2&.

Error message extract from SAP system. Copyright SAP SE.