Skip to main content
Vendor Invoice Signing Flow Step-by-step guide — OpenSign™ / RUSign Invoice E-Signature Process This guide walks a vendor through signing an invoice sent by Ruloans via the OpenSign™ / RUSign digital signature portal - from receiving the email to confirming that the invoice status has been updated. Step 1: Receive the invoice signing email The vendor receives an email from [email protected] titled “Please sign your invoice which will be submitted to RULOANS.” The email explains the process and contains a link to review and sign the invoice. Fig. 1 — Invoice signing request email with instructions
  • Click the link at the bottom of the email: “Please click on this link to review and sign the invoice at your earliest convenience.”
  • The link opens the signing portal in the web browser of your PC or mobile device.
Step 2: Request the OTP on the signing portal On the portal (RUSign / OpenSign™), the vendor is greeted with a “Welcome Back!” screen. A verification code needs to be requested before the invoice can be viewed. Fig. 2 — RUSign portal: request verification code
  • Tap/click “Get verification code.”
  • An OTP is sent to the same email address the invoice was sent to.
Step 3: Retrieve the OTP from email A follow-up email titled “Your OpenSign™ OTP” arrives from [email protected] with a 4-digit verification code. Fig. 3 — OTP verification email
  • Copy the OTP shown in the email.
  • Enter it on the portal to proceed.
Step 4: Review and sign the invoice Once the OTP is submitted successfully, the invoice loads in the browser. The vendor should check that the calculation/amount is correct. Fig. 4 — Invoice loaded with Decline / Finish options
  • If the calculation is correct: sign the invoice digitally in the signature field.
  • If there is an issue: select “Decline” and coordinate with your Business Head (BH) regarding the concern.
  • GST-registered vendors: still sign this copy (without GST) to confirm the pre-GST amount is correct, and separately submit the GST/IGST invoice to [email protected] as per the usual process.
⚠ IMPORTANT: After signing, you must click “Finish” (or “Decline” if rejecting) — this is the most critical step. The invoice status is updated in the system only after Finish/Decline is clicked. Simply signing is not enough.
Step 5: Confirm completion After clicking “Finish,” wait for the confirmation pop-up. A “Document signed” pop-up with a congratulatory message confirms the signature was accepted by all participants and the invoice status has been updated. Fig. 5 — Confirmation: “Document signed — Congratulations!”
  • Wait until the “Congratulations! This document has been successfully signed by all participants!” pop-up appears.
  • Once this pop-up is visible, the process is complete and the invoice status is updated on the backend.
Summary of flow: Email → Click sign link → Request OTP → Retrieve OTP from email → Enter OTP → Invoice loads → Sign → Click Finish/Decline → Wait for confirmation pop-up → Done.