Electronic Bank Format CAMT.053 specific to Germany

Hi, I am new to a German project where the earlier format DTAUS0 is getting replaced by CAMT.053. I was trying to maintain the external transaction codes in customizing settings and OT83, but unable to find the relevant values for transactions. I have the GVC codes with me and please let me know how to derive the transactions out of it. Or should I use a different approach.

Please help.