Make the credit card payments non-editable, and follow the same rules as removal of a payment. If a user can not remove a payment, I don't want them editing it either, unless it is the current day. So, the following steps need to be followed when pulling up the payment screen and looking at payments already recorded: a. Can the user remove the payments (setting in security). If Yes, let them, if NO, Don't let them. b. Can the user modify the payment amount? (Use the same setting as remove above or create a new security for modify existing payments). If Yes, Let them, if NO, Let them ONLY if the current day is the day that the original payment/deposit was recorded. They can correct a deposit only the day it is made, after that, only those with the proper security settings can modify a credit card payment.