Project Title Zoho integration expert needed

We need an experienced Zoho systems specialist to properly configure and stabilise the integration between Zoho CRM and Zoho Inventory.
The systems are not syncing as expected, and we need someone who understands Zoho architecture and how external ecommerce platforms interact with it.
Shopify is part of the wider system, so the specialist must also understand how Shopify data (orders, customers, products) typically flows into Zoho environments.
This issue is affecting day-to-day operations, so we are looking for a systems integration expert, not a general developer.
Systems Involved
Zoho CRM
Zoho Inventory
Shopify
Additional Context
Shopify is connected to Zoho, and a developer has created a custom/private Shopify app to handle certain data updates.
We do not yet know whether this is affecting the Zoho CRM and Zoho Inventory sync, but it may be relevant.
The priority for this project is to stabilise and correctly configure the integration between Zoho CRM and Zoho Inventory. The Shopify setup only needs reviewing if it is directly impacting this sync.
What We Need Done
The specialist will:
1. Review the existing connection between Zoho CRM and Zoho Inventory
2. Confirm both systems are connected to the correct Zoho organisation
3. Configure or repair the integration so that core data syncs properly
4. Check and resolve issues with:
Contacts and Customers
Products and Items
Sales Orders and Invoices (as relevant)
5. Review field mappings and custom fields
6. Check for validation rules or workflows that could block syncing
7. Check for API or third-party app interference if relevant
8. Validate how Shopify data is flowing into Zoho and whether this is affecting the sync
9. Test the sync with live test records
10. Provide a short explanation of:
What was wrong
What was fixed
Any configuration risks going forward

We also need this done tomorrow