FPCPL - Payment lot text - TXTVW

Hello,

In FPCPL, when a customer paid the invoice, the invoice communication is put in the field DFKKZP-TXTVW which corresponds to the Note to Payee in Payment - Usage text.

Could you tell me if there is a possibility to copy this text information in the posted document from FPCPL?

This text should be saved in the field DFKKOP-OPTXT of the document.

I would like to see this text when I use FPL9 to display the customer account.

which event I can use?

Thanks a lot for your help.

Have a nice day,

Chiachen