Issue with End Routine_adding new fields

Hi,

I am trying to add two new fields to a DSO (one is a key and other a data field). I changed the end routine to populate these fields. It reads the Result Package and get the data from another DSO table which is then get populated to the Result Fields.

It works fine in Debug mode and everything is green. But when i run the DTP in background, it throws me below error;

Exceptions in Substep: Write Data Package

Record (31) for segment (0001) has no reference to a source record

Error while writing error stack

Record (31) for segment (0001) has no reference to a source record

Error in substep Update to DataStore Object

I checked for duplicate or bad data. The load will finish fine if I reduce the data package size to 10.

Please let me know whether anyone faced similar issue in past.

Regards

Neo