HDL Load error

Summary:

Hello experts,

I am trying to do HDL Load to update Shift (Assignment Level DFF) using the HDL Load Worker.dat and am getting "You must provide a valid reference to the parent record. Ensure that the parent record is supplied in the same file, or has already been created." error.

Could you please guide in the correct direction.

Please advise.

Content (please ensure you mask any confidential information):
I am trying to do HDL Load to update the employee shift (Assignment level DFF). Attaching the HDL file I created.

Version (include the version you are using, if applicable):