Module development by JSON integration of the Logistics Site with Bitrix24

Good afternoon it is necessary to develop a module for the CRM system Bitrix24 module should allow you to synchronize and transfer the filled fields to the logistics application and back.
1. On the part of Bitrix24 to develop an interface for mapping fields
2. Make the logic of matching and unloading data from field fields
3. Create a developer account for the store
4. Place the application in the Bitrix store24

In addition to the standard fields, the rollers of goods should also be synchronized.