SAP Message UCLP061 - Overflow in operation COLLECT in data record summarization

Diagnosis
During operation "COLLECT" an overflow occurs in a numeric field ofdata structure &V1&.
It is possible that a characteristic field of structure &V1& has anumeric data type. The list processor allows numeric data types onlyfor key figures.

Procedure
In the table structure, check if all characteristics have a non
-numeric data type.
If the summation has an error, insert an additional characteristic withdata type "C" (character) and make sure it contains a text copy of thevalue of the original characteristic. Then replace the originalcharacteristic in the control table with the new characteristic.