Unable to migrate DFF using Helper tool

Summary:

Trying to move DFF to redwood and getting error.

Flexfield "PER_ASG_DF_Global Data Elements_ADP Paygroup" is not migrated because connection to the environment is unavailable or user does not have access to fetch the information.
NOTE: Attribute is in format <FlexfieldCode><ContextCode><SegmentCode>

Content (please ensure you mask any confidential information):

Hello,

I am trying to migrate custom DFF Global Segment Flex Field to Assignments pages in Redwood. I am getting an error message from the output of the Helper Tool Report.

Flexfield "PER_ASG_DF_Global Data Elements_ADP Paygroup" is not migrated because connection to the environment is unavailable or user does not have access to fetch the information.