Marketplace Connect works well with common 3rd party apps e.g. meta-field extensions and shipping integrations and supports use with Inventory & Order Management Solutions and Repricers (simply turn off the appropriate sync in your marketplace where other solutions are performing a certain sync function e.g. pricing sync for repricers). Marketplace Connect works well with other 3rd party apps due to our rigorous app development.
However, we cannot guarantee all 3rd party apps have been developed in accordance with these guidelines and given the large number it is impossible to test all. If you are using a 3rd party app that you are already using, and suspect may cause a conflict, we suggest testing with a small number of products/orders and reach out to support if you experience any difficulties.
For further assistance, please reach out to firstname.lastname@example.org