Hi,

The error message you mentioned indicates that there is an issue with the journal entry B11/2023/01/0001 (RG008) and its related statement line during the reconciliation process. The error specifically mentions that the journal entry must always have exactly one journal item involving the bank/cash account to maintain consistency.

To fix this problem,
* you need to make sure that the journal entry has exactly one journal item involving the bank/cash account. You can do this by checking the journal entry and making sure that there is only one journal item that has the bank/cash account as one of the accounts involved.
* Examine the statement line that corresponds to the journal entry in question. Ensure that it is correctly linked to the appropriate bank or cash account.
* Verify the account settings for the bank or cash account involved in the reconciliation. Ensure that the correct accounts are selected and properly configured.

Hope it helps