Message type: E = Error
Message class:  FCLM_CASH_RCNCLTON -  
Message number: 017
Message text: Selected items are reconciled.
Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.
To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.
Unfortunately, there isn't any extra information in this error notice.
First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).
Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.
You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.
The SAP error message FCLM_CASH_RCNCLTON017 indicates that the selected items you are trying to reconcile have already been reconciled. This typically occurs in the context of cash management or financial reconciliation processes within SAP, particularly in the Financial Closing cockpit or Cash Management modules.
Cause: Duplicate Reconciliation Attempt: The items you are trying to reconcile have already been processed in a previous reconciliation run. Incorrect Selection: You may have selected items that are not eligible for reconciliation because they are already marked as reconciled. System Configuration: There may be specific configurations or settings in your SAP system that prevent the reconciliation of already reconciled items.
Solution: Check Reconciliation Status: Verify the status of the items you are trying to reconcile. You can do this by checking the reconciliation logs or reports to see if they have already been reconciled. Select Unreconciled Items: Ensure that you are only selecting items that have not been reconciled yet. You may
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
FCLM_CASH_RCNCLTON016 Exchange rates or exchange rate types are not properly defined.
What causes this issue?  If the two sides of a reconciliation have difference currencies, the system translates both currencies to the bank account cu...
FCLM_CASH_RCNCLTON015 Exchange rate from currency & to currency & is missing.
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
FCLM_CASH_RCNCLTON018 One or more selected flow items are locked by another user.
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
FCLM_CASH_RCNCLTON019 One or more selected flow items are not available for reconciliation.
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
Click on this link to search all SAP messages.