Field help (SRHBETFCY) 

This information which cannot be modified specifies if the return type is 'inter-site'.
A return is automatically considered as being of the 'inter-site' type if the site linked to the delivery address legally belongs to the same legal company as the return site company. It is also mandatory that the site type be 'Stock'.
If it is an inter-company return, this indicator will also be activated.
SEEINFO When the return concerns an 'inter-site' customer (site of the same company), a credit memo cannot be produced for this return.