Below are the steps to follow when connecting Shoppe and Lazda Marketplaces to avoid the group SKU issue.
Step 1: Connect Shopee through Integrations and wait for the syncing to complete.
Step 2: Verify that group products have been synced correctly with Parent SKU and variant SKU.
Step 3: Connect Lazada through integrations. Now when the syncing starts the system will verify that the variants of the group products are already present and therefore it will show the lazada group sku as TEST123-GRP