Add troubleshooting guide for PVRR submission issues

Provides troubleshooting steps for users unable to submit a Prospective Vendor Registration Request in Dynamics 365 Finance and Operations, detailing causes and resolutions.

Author: sumitgaur

support/dynamics-365/supply-chain/procurement/unable-to-submit-pvrr.md

@@ -0,0 +1,27 @@
+# Troubleshooting Guide: Unable to Submit Prospective Vendor Registration Request
+
+## Symptom
+- User cannot submit a **Prospective Vendor Registration Request (PVRR)** in Dynamics 365 Finance and Operations.
+- Vendor registration wizard fails or does not proceed.
+
+## Cause
+- Vendor already exists in the system, causing duplication issues.
+- Vendor contact missing under **Vendor collaboration > All contacts**.
+- Incorrect user provisioning steps followed.
+
+## Resolution
+- **If Vendor Already Exists:**
+  1. Navigate to **Vendor collaboration > All contacts**.
+  2. Select the appropriate contact.
+  3. Click **Provision vendor user** to link the existing vendor without creating a duplicate PVRR.
+<img width="1117" height="520" alt="image" src="https://github.com/user-attachments/assets/578d30d4-4c77-4a86-85d6-e639360dfd4f" />
+
+- **If Vendor Contact Does NOT Exist:**
+  1. Go to **System administration > Users** and delete the existing user record.
+  2. Re-invite the vendor using **Procurement and Sourcing > Vendor collaboration requests > Prospective vendor request registration**.
+  3. This recreates the user and vendor contact.
+<img width="1237" height="573" alt="image" src="https://github.com/user-attachments/assets/f4239479-e861-4467-8317-2cb31777b112" />
+<img width="1597" height="506" alt="image" src="https://github.com/user-attachments/assets/f7f2e07f-c017-47fb-a63a-9fc03d2cb0d3" />
+
+- **Important:** After recreating, follow your configured vendor request approval process (auto/manual).
+- Refer to official documentation: [Onboard vendors - Supply Chain Management | Dynamics 365 | Microsoft Learn](https://learn.microsoft.com/en-us/dynamics365/supply-chain/procurement/vendor-onboarding).