Advance returns, which are paid back with AR/AP Slips, Bank Slips and Progress Payment Invoices of Advance operation type that are generated with "Generate Advance Slip" option in Sales Contracts browser > right click menu, are listed in Advances and Back Payments window. You can open the records in View mode only. 
The columns and fields located under the Advances and Back Payments tab are as below: 

Slip Type

This information refers to the type of the relevant slip generated for the Advance or back payment record. The options are Service Sales Invoice, AR/AP Collection (Advance) Slips and Bank Payment (Advance) Slip.

Type

Type field shows "Advance Amount" information for the AR/AP and bank slips or "Advance Return" information for the progress payment invoices.

Slip No

It is the number of the relevant slip generated for the advance or back payment record.

Slip Date

It is the date of the relevant slip generated for the advance or back payment record.

Amount

This field shows the advance amount for AR/AP and bank slips, and advance return total for the Progress Payment invoices.

Progress Payment No

It refers to the number of the Progress Payment slip related to the advance return.

Status

It refers to the status of the advance or back payment slip.

Contract Advance

Contract Advance is calculated according to the Advance percentage specified under the Administrative Specifications Info tab.

Total Advance

It is total advance amount that is paid / collected with AR/AP or bank slips. When calculating advance amount of a contract, both AR/AP and bank slips are checked. For example, if advance payments of 15.000 TRY and 20.000 TRY are made with AR/AP Collection (Advance) slip and Bank Payment (Advance) slip respectively in a sales contract, Total Advance amount would be 35.000 TRY.

Total Return

Total return is calculated according to the total return amount issued by the Progress Payment invoices.

Remaining Return

Remaining return amount is calculated by subtracting the total advance amount from the total return amount.