Generate a Requisition using the WayneBuy PSC form, attach the signed PSC and approved PSC Checklist, and complete. Consequently, every vendor desiring to enter into a contract with the state must complete this certification form.A services agreement is used to document a transaction where the seller provides a service to the buyer. Please submit one combined document with all attachments for each project application. The cover letter shall provide the name, address, telephone and facsimile numbers of the Service. The purpose of this Agreement is to set forth the terms and conditions for participation in the Early Intervention.