I need help while inserting records in D365 using a custom service from the postman
Create record of Fin & Ops Apps (Dynamics 365) connector sounds like the easiest way to me.
Note that it requires a data entity. If you don't have any data entity, you should create one, to allows data export and import, Excel integration, Power Apps integration and a plenty of other things based on entities.
Basically i have a power app now i want to insert data into it and insert into my table. what is the best approach for this?
These are two different things.
Postman allows you to call your custom service, but it has nothing to do with inserting data to a table.
The logic for inserting data to a table can be implemented in a custom service, but it's not related to Postman. The logic will work the same if you run the service from another client or even from X++.
Therefore split the problem to several parts:
You won't achieve anything if you try to do everything at once. Instead, split the problem to smaller pieces and deal with them one by one. When you get stuck, you'll know what the problem is and you'lll be able to ask a specific question in this forum.
I want to know how can i insert a data in my table field from postman using my contract class
You're at the right place. Please explain your problem to us.
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