Name of internal structure too long for function module generation

What causes this issue?

The name of the internal structure is too long to meet the technical
prerequisites for generating a function module. The maximum length is 26
characters.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Copy the structure to a name with fewer than 27 characters and use this
structure to generate the function module.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.