Field help (HDURECUP) 

The resynchronization is only carried out on records with status DUDSTA set to value 'two'. It corresponds to an open item linked to a posted document (as opposed to open items linked to unposted invoices, for instance).

A certain number of fields in table HISTODUD are not updated:

Some fields are resynchronized by applying a rule, i.e.

SEEINFO Those fields linked to the amounts are not resynchronized: