Supplier Technical Support Request Supplier Name:* Supplier Number (in Supplier Portal) OR Taxpayer Identification Number (TIN), OR "NotKnown" if neither are known. : * Supplier Contact Name:* Supplier Contact Email:* Supplier Contact Phone:* Contract number (if any): Supplier's County Representative:* Detailed description of the request:* (Please include all possible information related to the request including any Contract number, Invoice number, specific question/issue, etc.) Submit The Arlington technical support team will reply as soon as possible to your inquiry, within 2 business days, often sooner.