Diagnosis
You want to activate a data transfer process (DTP) or check whether aDTP is syntactically correct. The system produced a warning duringextraction: Due to the configuration of the DTP, the data has to be readfrom the source all at once at runtime. With large datasets, this canoverrun the main memory.

Procedure
Activate data extraction on a package by package basis. On theUpdate tab page under grouping fields, first define the fieldsthat you want the extraction grouping fields to represent. Select thefields that you want to use as the group key for the packages producedduring extraction. Activate the DTP.