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VHDK backup are failing with disk signature collision error

Hi All,

Recently we are facing the issue while backing up one of the server in VHDK level with teh below error.

"A snapshot could not be created. The most probable cause is a disk signature collision between two or more VHDs that are assigned to the virtual machine."

We can see other server is same heyperv is getting backed up successfully while the problemetic one is keep on failing regardless full or incremental.

Also in the hyperv we can see for the problematic server avhdk files are present and not getting merged.

Can someone please help.