SAP Message 28066 - Invalid combination of object identifier/class type: (&1)(&2)

Diagnosis
The syntax check found an error in an entry for an object. Thecombination of object identifier and class type is incorrect.

System Response
The cursor shows where the error occurs.

Procedure
At the cursor, the syntax check expects an object. To refer to anobject, you enter the object identifier, class type, and object key:
(material)(300)(NR='M4711')
Check whether the object identifier you entered at the cursor, &V1&, iscompatible with class type &V2&.
Please see also other possible causes of error (messages).