SAP Message 28069 - Partial key expression = expected

Diagnosis
The syntax check found an error in your entry for an object key.
To refer to an object, you enter the object identifier, class type, andobject key:
(Material)(300)(NR='M4711')
The object identifier and object key are defined in the IMG forClassification. In the Define object types step, anobject identifier is defined for each object type. This identifies theobject type in dependency maintenance functions. 'Material' is theobject identifier for materials.
In the Define object keys step, the object keys for an objecttype are displayed. The fields of the object key also have a fieldidentifier used to refer to them in object dependencies. The object keyfor materials is the material number. The material number is accessedvia the object ID 'NR'.
The object key can consist of several fields, as is the case fordocuments, for example:
(Document)(017)(TYPE=DRW, VERSION=00, PART=000, NR='bmw-ca31')

System Response
The cursor marks the incorrect object entry.

Procedure
Check your entries for the object key and correct them according to thepattern shown.