We updated our integration URLs with workers api but not working

Summary:

We have rebuild our integration URLs with Worker API but when we are testing getting error like: "Request parameter expand with value workRelationships.assignments.assignmentDFF is not valid"

Content (please ensure you mask any confidential information):

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

Code Snippet (add any code snippets that support your topic, if applicable):

/hcmRestApi/resources/11.13.18.05/workers?q=PersonNumber=40002388&expand=workRelationships.assignments.assignmentDFF