Searching for a client by field is the selection of an additional client field in the box, based on which to search. The field is taken from the payment (in the bank), namely the EDRPOU code, then it is compared with the field you specified in box b; if it finds it, it binds the payment to the client, if it does not find it, and the checkbox "If the client is not found, create it according to the data from the payment" is checked ", then a new client is created and the payment is attached to it, if the checkbox is not set, then neither the payment nor the client is added.
Search for the external process ID by the pattern (for example #ordercode1c):" - this is a search by the External process id field
https://prnt.sc/uifayv in exact match
The payment comment (destination) is taken, and if there is such a # symbol, then after it the external id is searched. If it finds it, it binds it to the order; if not, it does not bind it. The template must be specified like this "#ordercode1c" (without quotes), if there are spaces or something else, it may not work
For example:
Purpose of payment:
Payment by invoice #454728171
Then you need to specify it like this:
#ordercode1c
What if:
Purpose of payment:
Bill payment # 454728171 (with space)
Then:
#\sordercode1c