The difference between "Build model" and Rebuild Project

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I imported a D365FO project going by model:"MyModel" in the application explorer and add search results to new project.

When you make changes to my code in the project like adding new forms or classes am I supposed to rebuild the project from solution explorer(A)? or go D365 -> Build Model from the Menu(B)?

The reason I am asking is when updating the data entity ( override functions ) and do (A) the change don't get deploy to the AOS where as (B) will deploy the change but it takes 2-3 minutes which I can't stand to do it all the time(painfully slow). I like to know what is the difference between (A) and (B) and if you can point out the document about it that would be helpful.

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I just added the following code to the existing Data entity but didn't work when building project and haven't done the synchronization.

However when I build model then it started working(can add a breakpoint etc...)

[SysODataActionAttribute("AvailableSchedRsrcList", false),SysODataCollectionAttribute("return", Types::Record, "STFWebSchedRsrcEntity")] public static List AvailableVehicles() { STFWebSchedRsrcEntity schedRsrc; List schedRsrcList; schedRsrcList = new List(Types::Record); while select schedRsrc { schedRsrcList.addEnd(schedRsrc); } return schedRsrcList; }

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André Arnaud de Cal... 301,035 Super User 2025 Season 2 on at

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The synchronization job takes care of also synchronizing available data entities with the latest versions. So for data entities, just a simple build is not sufficient. It is the first step. Second: DB sync.

A rebuild means that all compiled elements will be deleted before building new ones. A build will just create new elements and new versions of existing elements. This means that a build will not clean up obsolete compiled files whereas the rebuild will do this.

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Based on my testing not so clear the difference between "Build Model" and "Build/Rebuild Solution". Sometime it will pick up the change sometime it doesn't when just "Build/Rebuild Solution". It almost like when you change the interface it requires Build Model but just changing the code inside function "Build Solution" is fine.

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When I added the following code to data entity and "Build/Rebuild Project" and trying to call this path through url I wasn't able to use this endpoint /data/STFWebSchedRsrcCollection/Microsoft.Dynamics.DataEntities.AvailableSchedRsrcList (500 errors) but after Build Model it started working. Just to mention the default endpoint (/data/STFWebSchedRsrcCollection/) is working fine. I didn't have to synchronize the database. But after I get this endpoint working I can change inside of AvailableVehicles function and I get this changes applied to AOS right away when I just "Build Project".

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No I am not talking about UI but chaning class method name or adding new class method.

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