Unable to unlock the Work Flow channel

Hi Team,

WhatIF_R&O_Adj is a Workflow Channel, and it is assigned under "Financial_WeeklyProcess" - "Base_Input Profile" (Refer the 2nd screen shot). when we are trying to unlock the channel. getting pop up like "'mnuWFChannelLockWhatif_R&O_Adj' is not a valid value for property 'Name'." and it is not listed under WF channel list(Please refer 3rd screen shot).

Kindly help us to resolve the issue.