Message type: E = Error
Message class:  FI_E - Message Class for FM English Developers 
Message number: 002
Message text: Account &1 in company code &2 in CO area &3 is a cost element
You are using the funds management system integrated with the budgetary
ledger (BL). For postings in the budgetary ledger, the FI-GL account
derived from customizing must not be a cost element because, since the
budgetary ledger creates an FI-GL document, it would reduce the
availability control for funds management twice.
In this case, the FI-GL account &V1& in company code &V2& in CO area
&V3& is a cost element.
The budgetary ledger cannot post this document.
Either change the customizing for account derivation by choosing
another appropriate account or, if this is the right account to be
used,delete the cost element associated to it.
If you are using the budgetary ledger with account derivation for the
US federal government, execute transaction OFBL. You can access it
using the link below.
<DS:TRAN.OFBL>Execute US federal government BL account derivation</>
ENDIF
After making the change, restart the transaction and try to post again.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message FI_E002 indicates that the account specified in the error message is a cost element in the specified company code and controlling area. This error typically arises when there is an attempt to post a financial transaction to an account that is defined as a cost element, which is not allowed in certain contexts.
Cause: Account Type: The account you are trying to post to is defined as a cost element in the controlling area. Cost elements are used in cost accounting and are not meant for direct financial postings in the general ledger. Posting Type: The type of posting you are attempting (e.g., a financial transaction) is not compatible with cost elements.
Configuration Issues: There may be configuration issues in the financial accounting (FI) or controlling (CO) modules that need to be addressed.
Solution: Check Account Configuration: Verify the configuration of the account in question. Ensure that it is set up correctly
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
FI_E001 Invalid financial transaction in commitment item &1 defined in account &2
What causes this issue?  You are using the funds management system integrated with the budgetary ledger (BL) for FM area &V4&. For postings in...
FI_CO_DRF_COSTCENTER070 Deletion for Cost Center &1 and Company Code &2 accepted
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
FI_E003 Value type missing in budgetary ledger interface table
What causes this issue?  You are using the funds management system integrated with the budgetary ledger (BL). For account derivation for the US federa...
FI_E004 Open items/actuals budget status customizing missing for FM area &1
What causes this issue?  You are using the funds management system integrated with the budgetary ledger (BL) for FM area &V1& and with account...
Click on this link to search all SAP messages.