During the implementation of S/4HANA OP1610, we encountered difficulties in the customizing of Banks. In SPRO customizing options, the Performance Assistant, describes the use of Fiori Apps as the only way to configure banks in S/4HANA, but it is possible to configure them from the system, using another method.
These are the screens of what the system tells us when customizing in the following path (Transaction FI12): Financial Accounting (New) -> Bank Accounting -> Bank Accounts -> Define House Banks.
We can configure Banks following these steps:
1. First, we need to configure banks through transaction FI12_HBANK, as this is the new transaction in S/4HANA which replaces the obsolete FI12. To do this, it is necessary to implement the following SAP Note 2377529. After doing this, you will be able to configure the banks as usual.
2. You will notice that it is not possible to create and/or assign the account ID to banks. This is due to the changes in the system. The details are explained though the SAP Note 2424544.
3. If you follow the resolution in the SAP Note above, it says that the Bank Account ID, can be configured using the application "Manage House Banks" in transaction NWBC or Fiori Launchpad. So this gives an alternative to Fiori.
4. If you try to use the button "Create new bank account", it won't be possible, and the following message is displayed:
5. This message tells us that some configuration is missing. The customizing (SPRO) needed is showed now under the path: Financial Supply Chain Management -> Cash and Liquidity Management -> Bank Account Management -> Basic Settings
There is a missing part in the SAP Notes, and it is needed in order to configure Banks: It is mandatory to "Define Number Ranges for Bank Account Technical IDs" and "Define Number Ranges for Change Requests".
6. When this customizing is done, we can return to Transaction NWBC. After clicking on the "New Bank Account" button, the menu for further configuration will be displayed. and the resolution in SAP Note 2424544 covers the rest. Using the "Connectivity Path", you will find the field to assign the account ID for Bank, and you will be able to see it as usual in table T012K.
Note: If you use Fiori, an application for workflow might be needed in order to reflect the changes in table T012K.
I hope this information turns out to be helpful in your future implementations.