Please execue the report RSC1_DAIGNOSIS, in order to check the inconsistencies at the delta queue in the source system.
The report RSTRFCEG is used to find and correct the inconsistencies in the delta queue.
See this: Delta Queue Diagnosis
Many times we come across situation where there may be inconsistencies in the delta queue. To check these we can use a diagnostic tool. The report is explained in detail here. *RSC1_DIAGNOSIS* Program is Diagnosis Tool for BW Delta Queue