What exactly does professional registration mean?

I was offered a position to be a maintenance technologist. On the offer it mentions I need to submit a professional registration, Or to br exact.

Professional Registration A copy of your Professional Registration is required to be included in your employee file, if applicable. Please submit a copy of your registration to Human Resources at (hr email)when returning a signed copy of this letter.

I dont have anything like this. Isnt professional registrations for drs, lawyers, engineers, accountants or jobs in that manner ? I only went to college.

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