You attempt to change an account type to 'Cash Account' with sub-type 'B' or 'S' in the 'Manage G/L Account Master Data' app (ID F0731A) but when saving you encounter error message "Field 'Account Currency' contains an entry, although it is hidden" (Error FH738)
The account currency field is suppressed for cash accounts with sub-type 'B' or 'S', as the account currency field is always filled by the company code currency.
When posting to such an account, the specification of a house bank account is required. The transaction currency check is done based on the house bank account provided in the document, meaning the G/L account master is no longer responsible for this; hence any transaction currency can be used.
Ensure that the account currency and company code currency are the same for any cash account with sub-type 'B' or 'S'
Cash, account, currency, sub-type, hidden, FH738, contains an entry , KBA , FI-FIO-GL-MD , Master Data Apps , How To