There are various precautions you can take prior to setting up an integration which will prevent future issues from appearing.
If you are integrating product or invoices data, please make sure that all products have unique Product Codes/SKUs.
For products with different sizes, colours, amounts etc, make sure each variation has a unique Product Code/SKU.
Please also make sure that all systems have the same Product Codes for the corresponding products. We use this code as a unique identifier for matching products between systems. We can automatically generate SKU codes for you, however it is always better to have your own unique codes.
If you are integrating products or stock levels data, please make sure that all products have unique Product Codes/SKUs. Also make sure that your accounting system has all the correct product stock levels.
Please make sure that there are no pre-existing duplicates for contacts within the same system. We can match the same contact across 2 different systems however issues may arise if there are 2 of the same contact in one system.