HCM Data Loader - Terminating WorkRelationship

Summary

HCM Data Loader - Terminating WorkRelationship

Content

Hi Friends

I am working on Terminations with HCM Data Loader. I just supplied WorkRelationship in the Worker.dat file . I am seeing a strange error 

You must enter a valid value for the BusinessUnitId field.

This is the file whicjh i am trying to load. I did check the BU is Active too. have you seen this error while terminating employee using HCM Data Loader.  I did load this in our Dev pod and the same has been loaded very successfully.

Please let me know your thoughts on the same. thanks!