A. DC Government is modernizing its’ procurement system. Invoicing is moving to the District Integrated Financial System (DIFS), the District’s instance of Oracle Fusion Cloud, effective November 2, 2026. The gives you one place to submit invoices, manage your profile, and make banking updates.

A. DIFS is the District Integrated Financial System, the District’s instance of Oracle Fusion Cloud. If you have submitted a P23 or P43 invoice in recent years, you have already used it.

A. Today your financial data sits in two different systems, your invoice status is only available to you by reaching out to District staff and you do not have the ability to make banking changes on your won. After November 2, you hold all three: one system, real-time status, and self-service.

Date	What happens
October 21, 2026 – October 22, 2026	Free live virtual supplier training sessions run on a recurring schedule, in the morning and afternoon. Registration is required.
November 2, 2026	Phase 1 go-live. The DIFS Supplier Portal opens for supplier invoicing.
To Be Updated	Open virtual question-and-answer labs run daily during week one, with sessions dedicated to suppliers.

A. The terminology aligns with the terminology used in DIFS. You will see supplier used going forward. Nothing about your standing with the District changes.

A. Manual paper invoice entry is available only through an approved waiver process per Code of District of Columbia 2-361.04a.

• How you bid. Registration for sourcing events and the way you find and respond to solicitations do not change in Phase 1.
• Your payment terms. Phase 1 changes where you submit an invoice, not how or when you are paid. Quick Payment Act timing requirements continue to apply.
• Your contracts, certifications, and history. All of it carries forward.
• Your purchase orders. In Phase 1, purchase orders continue to be issued as they are today. Purchase order delivery through the portal arrives in Phase 2.

A. Only new Suppliers with purchase orders need to register in DIFS. Registration will be open beginning November 2, 2026. All existing Suppliers already have DIFS profiles.

A. Starting November 2, 2026, you will use DIFS for all your District invoices. Please confirm you can still sign in preparation for go-live on November 2. If you have questions about login, email [email protected] or call the DIFS Support Center Helpdesk​ at (202) 671-3437, Monday through Friday, 7:00 am to 5:30 pm.

A. To register you will need your W9 and master supplier form. To set up direct deposit in DIFS, a bank letter or voided check and ACH form is needed.

A. Register at least two weeks before you need to invoice. Allow up to five business days for review of a new registration or a change request. If your request is time-sensitive, contact: Create a Zendesk Ticket by emailing [email protected] or call the DIFS Support Center Helpdesk​ at (202) 671-3437, Monday through Friday, 7:00 am to 5:30 pm.

A. Yes. Every invoice requires an attachment with a digital copy of the invoice. Attach your invoice document as a PDF. PDF is preferred because it preserves formatting for the approver reviewing it. Do not attach a password-protected or encrypted file; the approver cannot open it, and the invoice will be rejected.

A. Purchase orders show the supplier of record and are issued to parent suppliers only. A child supplier cannot invoice against a purchase order issued to the parent. If you are a child supplier, an accounts payable technician enters your invoice for purchase orders issued to your parent supplier. Child supplier portal entry arrives in Phase 2.

A. The DC Vendor Portal stops accepting invoices on October 14, 2026. Invoices you submitted in the DC Vendor Portal that are still in process at cutover (including those pending approval and those that failed to integrate) are brought into DIFS as part of the one-time cutover upon approval. You do not need to submit an invoice that has already been accepted in the DC Vendor Portal. If an invoice requires action after cutover, you will be contacted, and its status will be visible to you in the DIFS Supplier Portal.

A. Old invoices, purchase orders, and payment information will be accessible in the DIFS Supplier Portal. Read-only access will be available through September 30, 2027 in The DC Vendor Portal.

A. Yes. The Transaction Reports section lets you compare purchase order amounts against invoice amounts, track outstanding balances, and export your payment history for your own reconciliation. Invoices, receipts, and payment history appear on one consolidated view rather than across several screens. Only invoice managers can run reports.

A. Watch your email for an invitation to free virtual training classes. One comprehensive session covers registration, profile maintenance, invoice submission, and payment status Job aids are also available on the DIFS Resources webpage. Please send an email to [email protected].

A. Yes. Every session, recording, job aid, and quick reference guide is free.

A. Contact the DIFS Helpdesk: Email [email protected].

A. The DIFS Helpdesk is the first stop for every question. Open virtual question-and-answer labs will run daily during the first week after go-live. Check your email for details. Job aids, quick reference guides, and training session recordings will be published on DIFS Supplier Portal resources webpage.