Editing Payment Details 
Use
On the Payment Details tab page, you edit the payment details for settlement postings and other general payment details to be used in the account or master contract. The specified reference account can be an internal account or an external account. An internal reference account is managed in the same Account Management system (AM system) as the account you are currently editing. An external reference account can be managed in a second AM system, a different SAP system, or an external system.
In the Settlement Payment Details group box, you can specify that you want the settlement results to be posted to a reference account instead of the settled account.
The account settlement for an account comprises a series of individual events (debit interest, credit interest, account maintenance charges, and so on) that are normally posted on the settled account. If you want to post the settlement results to a different account to the settled account, you can specify different reference accounts on this tab page for each payment details type and posting type.
A customer wants to have the due debit interest taken from a reference account rather than from the settled account. In this case, you can use the payment details type for the Debit Interest posting type and specify the account details required by the customer. When the settlement results are posted, all amounts are posted to the settled account apart from the debit interest, which is posted to the reference account required by the customer.
In the Payment Details group box, you can specify other payment details to be used for particular functions. SAP currently provides one payment details category, Time Deposit, which you can use when processing a time deposit account.
A customer wants to post the revenues from his or her time deposit account to a reference account. You can enter this here.
Prerequisites
Before specifying payment details for the individual posting of settlement results, you must have defined payment details types and assigned posting types to them in Customizing for Account Management (FS-AM) under Product Management ® Settlement ® Define Payment Details Types for Settlement Postings.
If you want to use the general payment details Time Deposit, the account to be processed must be a time deposit account, and the Time Deposit Agreement feature must be active in the account product on which the account is based, and not locked in the contract.
Procedure
Settlement Payment Details group box
...
1. Use the input help to select a payment details type.
The standard setting supplied is 200000, which applies to all settlement postings. If you create account details for this payment details type, the entire settlement result is posted to this account.
The more payment details types you create for each posting type in Customizing, the more you can control the posting of individual settlement results to different accounts.
2. Enter the required details for the reference account.
If you specify an internal account for the settlement payment details, but the bank posting area is different, or you specify an external account, you must enter all transaction types and payment methods, so that the system can create a payment order for settlement.
If you specify an internal account for the settlement payment details and the bank posting area is the same, you do not have to enter any transaction types or payment methods.
3. Choose Save.
Choose Save.
Payment Details group box
1. Use the input help to select a payment details category. SAP currently provides the payment details category 250001 Time Deposit for account contracts.
2. Enter the required details for the reference account. Regardless of whether the account is internal or external, you only need to enter the credit transaction type and credit payment method.
3. Choose Save.
For more information about settlement, see the SAP Library and choose Account Management ® Settlement.
For more information about time deposits, see the SAP Library and choose Account Management ® Time Deposit.