County Only Has Assessor's Parcel Number (APN) or Assessor's Identification Number (AIN) or Property Identification Number (PIN)

County Only Has Assessor's Parcel Number (APN) or Assessor's Identification Number (AIN) or Property Identification Number (PIN)

These are all acceptable terms: APN, AIN, or PIN. Assessor's Parcel Number (APN) is a unique number assigned to real property by the tax assessor of the property's jurisdiction; Assessor's Identification Number (AIN) and Property Identification Number (PIN) are alternative terms with the same meaning.