SAP Message RU142 - Confirmation triggered by milestone

Diagnosis
Confirmation &V1&, counter &V2& was not entered directly. It wasautomatically confirmed through the confirmation of a milestoneoperation.
By cancelling the confirmation of the milestone operation, you alsocancel the confirmation of any preceding operations which wereconfirmed by the milestone confirmation.

Procedure
Check whether you really want to cancel confirmation &V1&, counterV2.