Message type: E = Error
Message class:  FCO_SFIN - FI-CO Simplified Financials 
Message number: 105
Message text: Item &1: Account &2 doesn't have cost element category 01
In BADI FCO_COGS_SPLIT_BASIS you returned account &V2& in changing
parameter table CTS_SPLIT_FACTOR for position number &V1&. Account &V2&
is not assigned to cost element category 01 'Primary costs/cost-reducing
revenues. Such accounts are only allowed in changing parameter table
CTS_SPLIT_FACTOR.
Item &V1& cannot be split.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Use only accounts assigned to cost element category 01 in changing
parameter table CTS_SPLIT_FACTOR.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message FCO_SFIN105 indicates that there is an issue with the account configuration in the context of cost accounting. Specifically, the error states that the account specified (Account &2) does not have the required cost element category (in this case, category 01, which typically represents primary cost elements).
Cause: Missing Cost Element Configuration: The account in question is not configured as a primary cost element in the system. Primary cost elements are used to transfer costs from financial accounting to controlling. Incorrect Account Assignment: The account may not be intended for use as a cost element, or it may be incorrectly assigned in the transaction you are trying to execute. Account Type: The account type may not be compatible with the operations you are trying to perform, such as posting costs.
Solution: Check Cost Element Configuration: Go to the transaction code KA01 (Create Primary Cost Element) or KA02 (Change Primary Cost Element) in SAP. Verify if
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