Configure and Test FBR Digital Invoicing

How to Configure and Test FBR Digital Invoicing in Muhasib ERP
Overview
This guide will help you configure the FBR Digital Invoicing connector and validate representative invoices in an authorized sandbox.
Muhasib serializes invoice/header and item data into the connector model and stores or displays the returned result according to system behavior.
Who can do this
You need access to Tax integration settings plus invoice/sale and relevant master-data permissions.
Before you start
Get current FBR sandbox specification, credentials/token, seller/buyer rules, scenario IDs, item/service codes, units, tax mappings, and approved samples.
Before saving, check that the correct company is open and that you have permission to complete this task.
Where to find it
Back Office → tax/global settings and the needed invoice workflow.
Configure and Test FBR Digital Invoicing
Step 1: Configure only the approved sandbox endpoint and protected credentials
Step 2: Map seller, buyer, document, scenario, item, unit, value, rate, and
Map seller, buyer, document, scenario, item, unit, value, rate, and tax fields.
Step 3: Test registered and unregistered buyer cases as applicable
Test registered and unregistered buyer cases as needed.
Step 4: Submit one representative invoice once
Step 5: Preserve sanitized request and full response identifiers/status
Step 6: Reconcile response line results to local lines
Step 7: Test approved rejection and recovery scenarios before go-live
Check your work
Every sandbox scenario receives the expected status and each response line/value maps unambiguously to the local invoice.
Take a moment to check your work before closing the window. This small check can save time later.
If something goes wrong
Treat schema-valid and authority-accepted as different states.
Do not infer current field requirements solely from bundled models.
Related guides
Prepare Muhasib for Tax Integration
Submit and Verify a Tax-Integrated Sale
Recover from Tax Submission Failure
What to do next
Prepare Muhasib for Tax Integration.