When a Receive location that uses the Logic App adapter is enabled, it gets disabled with the following event log error:
The Messaging Engine encountered an error when creating the receive adapter "LogicApp". The Assembly is: "Microsoft.BizTalk.Adapter.LogicApp.Runtime.LogicAppReceiver, Microsoft.BizTalk.Adapter.LogicApp.Runtime". The error occurred because the component does not implement the mandatory interface "IBTTransportControl".
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
This problem is fixed in the following cumulative update for BizTalk Server:
Cumulative Update 2 for BizTalk Server 2020
Note After applying this fix, new receive handlers will be added as isolated receive handler. Any existing in-process LogicApp receive handlers need to be deleted manually.
For information about the service packs and cumulative update list for BizTalk Server, see the following article in the Microsoft Knowledge Base:
2555976 Service pack and cumulative update list for BizTalk Server
For more information about BizTalk Server hotfixes, see the following article in the Microsoft Knowledge Base:
2003097 Information about BizTalk hotfixes and Cumulative Update support