NTSTATUS 0xC0190012 (STATUS_TRANSACTION_SUPERIOR

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Description:

the transaction already has its single permitted superior enlistment.

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STATUS_CRM_PROTOCOL_NOT_FOUND	STATUS_TRANSACTION_REQUEST_NOT_VALID

STATUS_TRANSACTION_SUPERIOR_EXISTS

STATUS_TRANSACTION_SUPERIOR_EXISTS is specific to KTM transaction hierarchy. A superior transaction manager coordinates outcomes for subordinate participants; KTM permits only one superior enlistment per transaction, while other resource managers may still create subordinate enlistments.

This is not a simple duplicate-handle error. Creating another superior would create conflicting owners of the prepare and commit sequence. If the caller merely needs to participate, it must use a subordinate enlistment rather than attempting to become a second coordinator.

A second superior enlistment was requested

Identify which component created the existing superior enlistment and whether it owns the expected commit path.
Verify that code requesting superior rights executes only for the intended root coordinator.
Keep the superior and subordinate roles explicit in diagnostics; a generic transaction handle does not reveal that role by itself.

References

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