Field help (GPGCOD) 

This field, managed with an entry transaction, is used to indicate a freely selected code used to identify and group the documents having the same code. It is used, for instance, when importing goods, to accumulate the various documents corresponding to orders that have been grouped into the same journey for logistics and cost optimization reasons.
The orders that have been grouped can be viewed in the List of orders inquiry function and the PURFCS - Purchase costs report.
SEEINFOIn the case of an inter-site order, the receipt of the delivery line automatically recovers the grouping code.