Newly added Distinguished field is not available after re-deployment in BizTalk

Hi there, 

Recently we have come across an issue after deploying a change to the Production. I have added a distinguished field to the existing schema and deployed it to the Production after it was tested on the QA. Everything was perfectly fine in the QA and but it was giving the below error in the orchestration while trying to access the newly added distinguished field in the orchestration.

When we checked the schemas and distinguished fields on the schema in the admin console, we could see the schema was correct.

We used the Azure CI/CD pipeline to deploy to production. It deletes the application and re-adds it but still, the dll's were in the memory of the host instance.

Error:-

Microsoft.XLANGs.RuntimeTypes.RuntimeInternalErrorException   at Microsoft.XLANGs.Core.Part.GetDFDef(String dottedPath) at Microsoft.XLANGs.Core.XSDPart.GetDistinguishedField(String dottedPath)

Cause and Resolution:-

The issue was due to the Host instance that was not restarted. We have restarted the host instances which fixed the issue.

Have a great day.