SAP Message UPS155 - No complete reference to the correction for the original packet available

Diagnosis
A correction package can only be created with reference to adistribution unit or its original package. The reference takes placevia the following external identification:
,,DSPNAME,,: ,,external descriptive name of the original package (=unit)
,,OWNER,,: ,,system that created the original package (unit)

System Response
The correction package cannot be created.

Procedure
Maintain the external identifiers of the original package so that acomplete reference can be created.