ERPNext-ZATCA Integration Fix

I'm looking for an experienced ERPNext developer to fix an integration issue with ZATCA. Currently, the integration is failing to send invoice details to ZATCA.

Key Requirements:
- Diagnose and fix the integration failure
- Ensure accurate transmission of invoice details
- Test the solution to confirm it works as expected

Ideal Skills and Experience:
- Expertise in ERPNext and ZATCA
- Strong background in API integrations
- Problem-solving skills
- Experience with invoice processing in ERP systems