Message type: E = Error
Message class:  CMMFSA_SUB_ACCOUNT - Commodity Derivative Order & Trade Execution : Sub Account 
Message number: 057
Message text: Select only inactive subaccounts for activation
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The SAP error message CMMFSA_SUB_ACCOUNT057 indicates that there is an attempt to activate a subaccount that is not in an inactive state. This error typically occurs in the context of managing financial accounts or subaccounts within the SAP system, particularly in the context of the Financial Supply Chain Management (FSCM) or similar modules.
Cause: The error arises when: You are trying to activate a subaccount that is currently active or in a state that does not allow activation. The subaccount may have dependencies or transactions that prevent it from being set to an active state. There may be configuration issues or data inconsistencies in the system.
Solution: To resolve this error, you can take the following steps: Check Subaccount Status: Navigate to the relevant transaction or report where you can view the status of the subaccounts. Ensure that the subaccount you are trying to activate is indeed in an inactive state. Review Dependencies: Check if there are any existing transactions or dependencies
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