In this post, I would like to draw your attention to RetailCdxSeedData class.
The RetailCdxSeedData class is called when you trigger the following option in Dynamics 365 for Operations
Retail and commerce->Headquarters setup -> Retail scheduler ->Initialise retail scheduler
If you have added some custom tables that need to be synced between your HQ and Channel Database using CDX (Commerce Data eXchange), then you should customize the RetailCdxSeedData class to include the custom tables. If you do not not customize the RetailCdxSeedData class, you will need to do the CDX table mapping manually in all the environments and in every DB refresh and increasing the chances of missing out some fields if you have a lot of tables.
Please refer the following link from Microsoft on how you can customise this class with an extension.
https://docs.microsoft.com/en-us/dynamics365/unified-operations/retail/dev-itpro/cdx-extensibility
Hope this helps
– Hitesh Manglani
Dynamics Journal 