3569902 - 'Target key must be different from source key' or 'An entry already exists with the same key' errors in Activity Set up bank determination

In Configuration Activity 'Set up bank determination for payment transactions' (SSCUI 101045) setup Payment Method for different Account ID of the same House Bank and Currency. After saving the following errors occur: 

• Target key must be different from source key or
• An entry already exists with the same key

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SAP S/4HANA Cloud Public Edition

1. Enter Configuration Activity SSCUI 101045 'Set up bank determination for payment transactions'.

2. Create new entries under Bank Accounts for

• House Bank
• Payment method
• Currency 
• Account ID

3. Saving data is not possible due to error: 'Target key must be different from source key' or 'An entry already exists with the same key'.

Case Example:

Create new entry for House Bank IHB01, Payment method '[' and Currency EUR with different Account ID.

Incorrect customizing. Fields "House bank", "Payment method" and "Currency" form a key all together. This means that considering a bank account, the three fields identify it, so there cannot be two bank accounts with the same bank, payment method and currency.

Add another Payment Method to distinguish for the same House Bank and Currency, or add a new House Bank if you need the same Payment Method and Currency.

bank determination, SSCUI 101045, house bank, payment method, currency, account ID, target key, source key, same key, SV015, SV 015, SV009, SV 009 , KBA , FI-FIO-AP-2CL , Fiori UI for Accounts Payable (Public Cloud) , Problem