find field name behind oracle form

Summary

find the 'activity class' field in the the AR tables

Content

Hello all,

Can you please help me with something?

I am trying to find out the table behind the Transaction Activities form:

AR- Billing - Manage Transactions - Actions - View Transaction Activities form

In this table I am looking for a specific field : ACTIVITY CLASS, that has different values from the Transaction Class

I have received some suggestions from the Oracle Support that the table is AR_PAYMENT_SCHEDULES_ALL, but the field is just not there: I checked the name of the filed, but also any other field that might contain the values from the 'activity class'.