Squareup Omni Multi-Website Scope Fix

Overview

This extension fixes critical multi-website/scope issues in the Squareup Omni payment module for Magento 2. It enables proper handling of separate Square accounts for different websites within a single Magento installation.

Problem Description

The Squareup Omni module has several hardcoded scope issues that prevent it from working correctly in multi-website environments:

1. Payment Processing: Location ID is read from the store scope incorrectly, causing payments to fail when using different Square accounts per website.

2. Admin Configuration: Merchant ID and location dropdowns only read from the default scope, preventing configuration of website-specific Square accounts.

3. Catalog Sync: The catalog synchronization only processes the first website with a given OAuth token, skipping other websites that share the same token but have different merchant IDs.

4. Customer Export: The squareup_customer_id attribute is stored per customer (not per website), causing card-on-file failures when a customer exists in one Square account but not another.

5. OAuth Flow: Location import fails during source assignment when the inventory source already exists.

Features

• Forces location ID to be read from the correct website scope during order export
• Ensures merchant ID is read from website scope in admin configuration dropdowns
• Removes token deduplication in catalog sync, ensuring all websites are processed
• Handles customer export per website, allowing card-on-file to work across multiple Square accounts
• Skips duplicate inventory source assignment during OAuth flow