Frequently Asked Questions (FAQ)

Who can I contact if I do not know my vendor number or if I have an invalid vendor number for the Invoice Payment Status Inquiry (IPSI) screen?

If you have a copy of the Department of Public Works purchase order that was issued to you, your six digit vendor number is displayed on the left hand side of the purchase order under the vendor information. If you need further assistance please contact the Accounts Payable Section at (626)458-6900 or by e-mail at to obtain your vendor number.

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