Diagnosis
You want to use the field &v1& in the extract structure for DataSourceV2. this field has a field of type 'dec' (or 'curr' or 'quan') with aneven number of characters.
This can create problems since the length resulting from calculationsin ABAP (for example, in extractors or Customer Exits forextraction) is too large to be inserted in the database later (PSA inBW), causing a short dump.

Procedure
This warning is only relevant when the maximum length of this fieldis exceeded during extraction, for example when the field isexpanded in the Customer Exit through a calculation.
More information and a remedy can be found in SAP Note 641744.