Frequently Asked Questions
Get answers to your questions about opportunities, purchase orders and more
Q. What is the Coupa Supplier Portal?
The Coupa Supplier Portal (CSP) is a free online platform where suppliers can:
- Receive and acknowledge Purchase Orders (POs) from SUSS
- Submit invoices directly against POs (Flip PO)
- Update company and banking details
- Participate in SUSS sourcing events easily
- Track invoice and payment status in real time
Q. Where do I register for a free CSP account?
Register HERE for free.
Q. How do I link my CSP account to SUSS?
You will receive an email invitation from the Coupa Supplier Portal. Click 'Join and Respond', complete the required details, and create your account.
Q. Is it mandatory to register for a CSP account?
- CSP registration is not mandatory, but suppliers are strongly encouraged to register as it provides a more seamless transaction experience, including the ability to submit invoices by flipping POs within the system, view applicable sourcing opportunities, and track invoice status. Suppliers should register early to benefit from improved visibility and efficiency in managing transactions. Registration is free and takes less than 15 minutes.
- For participating in SUSS sourcing events (RFQs, RFPs, ITTs): CSP registration is not mandatory, but strongly recommended for a faster, smoother experience.
Q. Is there a cost to register?
No, the Coupa Supplier Portal is completely free, with no registration or transaction fees.
Q. Can I use multiple email addresses?
No — each CSP account is registered to one primary email address. We recommend using a generic or shared email address (e.g. a sales or accounts inbox) to ensure continuity if individual staff members leave the organization.
Once the account is created, the admin may add additional users by going to Setup > Admin > Users > Invite Users. Each user will receive their own login credentials with individually assigned access permissions.
Note: If forwarding an invitation to a colleague, it can only be forwarded to email addresses within the same domain. Invitation links expire after 30 days.
For more info on CSP registration, click HERE
Q. What documents are required during onboarding?
Suppliers must upload business registration document and a bank statement or bank account verification document showing account holder's name, bank name, and account number.
Q. Is it compulsory to provide bank details?
Yes, submission of banking supporting documents is mandatory for verification purposes.
Q. How do I know if my account is linked to SUSS?
If your CSP is successfully linked to SUSS, "SUSS" will appear under the "Select Customer" dropdown menu within CSP.
Q. How will I be invited to sourcing events?
You will receive an email invitation from SUSS to participate in a sourcing event.
Q. Can I participate without an invitation?
Yes! There are two ways to discover and participate in SUSS Sourcing opportunities without a direct invitation:
- SUSS Website
SUSS publishes its tender opportunities on the SUSS website. You may browse the listings and follow the instructions provided to participate. - Coupa Supplier Portal (CSP) — Public Sourcing Events
If you have a CSP account, you can browse and participate in publicly listed sourcing events directly on the platform — no invitation needed. Here's how:
a) Log in to your CSP account at supplier.coupahost.com
b) Click on the Sourcing tab in the top navigation bar
c) Select Public Sourcing Events to view all open events available to any registered supplier
d) You can filter events by:
i. All Public — all active public events across Coupa customers
ii. My Category — events matching the commodity categories in your Business Profile
iii. My Events — public events you are already participating in
e) Click the Request Participation link next to any event you are interested
f) Once your request is approved, you will receive an email invitation to the event
Q. I received an invitation email to participate in a sourcing event, what should I do?
After clicking on the invitation link, indicate your intention to participate, accept the Terms of Acceptance, complete the required sections and submit your response through CSP.
Q. What should I do if I accidentally decline a sourcing invitation?
You may return to the same invitation email and change your response to "Intend to Participate" provided the sourcing event is still open.
Q. Can I edit my bid after submission?
Yes, you can amend and resubmit your responses as long as the sourcing event is still open.
Q. Can freelancers participate?
Yes, freelancers and independent contractors may also participate in sourcing events and submit quotations where they are eligible to participate, including where invited by SUSS or where the event is publicly available.
Q. How will I receive Purchase Orders (POs)?
You will receive POs via email or can access them through the CSP under the 'Orders' tab.
Q. What action can I perform on a PO?
You can review the PO details, acknowledge the PO, and create invoices or credit notes.
Q. How do I create an invoice?
To create an invoice in CSP, open the PO, select 'Create Invoice', complete all mandatory fields, attach the invoice document, and submit it via CSP.
Q. What are the invoice requirements?
Invoices must follow formatting rules, and the invoice number must not exceed 16 characters. Suppliers must attach the invoice document and any supporting document at the point of invoice submission.
Q. How do I track invoice status?
Invoices status such as Draft, Processing, Pending, and Approved can be viewed in CSP.
Q. Do I need to update bank details for every invoice?
No, bank details do not need to be updated for every invoice.
Q. What should I do if I submit an invoice in error?
You may withdraw the invoice if no action has been taken. Otherwise, create a credit note against the invoice.
Q. When should a credit note be issued?
Credit notes should only be created when an invoice is formally disputed or requires correction.
Q. What happens to POs and invoices already in progress before go-live?
No disruption to existing transaction:
- In-flight POs and invoices will continue to be processed through the current system as usual
- Outstanding POs will be migrated to Coupa at a later date in 2026. Affected suppliers will be notified ahead of time.
- New transactions from go-live onwards will be managed through Coupa
Q. Will SUSS payment term change?
No. This is a system/platform change only. All existing contracts, agreements, and payment terms with SUSS remain fully valid and unchanged.
Q. How do I access help resources?
Q. What are the file size limit for attachments?
| Module / Use Case | Maximum File Size |
| General Attachments | For optimal performance, attachments should be ≤15MB per file size. ZIP format is recommended for larger files |
| Invoice Inbox | 7.5MB |
| Invoice Image Scans | 7.5MB |
Q. Who should I contact if I need help with CSP or Coupa-related matter?
For assistance with CSP registration, onboarding, sourcing events, PO access, invoice submission, or other Coupa-related matters, please refer here.
Contact Us
You can contact us at [email protected] if you have any queries.