Saving timecard error about person assignment

Summary:

Redwood Timecard: I am trying to edit an already approved timesheet but i am seeing that error while the Assignment is active for that period

Content (please ensure you mask any confidential information):

I have this error: "The person assignment is not active as of the expenditure item date in the human resources application"

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