Internal error: Entry in COKA-Buffer not found

What causes this issue?

The system could not find the entry with the following key in the COKA
float:
Object number = &v1&
Cost element = &v2&
Origin group = &v3&

System Response

An internal error has occurred. Processing stopped.

How to fix this error?

Notify your system administrator.

Error message extract from SAP system. Copyright SAP SE.