Sever Level Logs in ArcGIS for Server (Exception Messages)

[TimHayes2021]

 I was looking at the Debug Logs in our ArcGIS Server Manager and see two Severe Level Logs:

Exception in Put(): 4672 Put exception: the client id
4672 already has a value
GIS_Housing.MapServer_4673 checked out.
Housing.MapServer

Exception in Get(): _GetItemIterator exception: client id
4672 is trying to check out GIS_Planning.MapServer
but it already checked out
Housing.MapServer4672
Housing.MapServer

These services are both sourced from our Enterprise GDB (SQL Server not a File GDB or Data Store).

Any thoughts on what these message mean and how to resolve them?

[LanceKirby2]

Did that resolve the issue? 

[JessicaJackson]

I haven't gotten the DynamicMappingHost error since I changed it about 18 hours ago! Also, memory use on both my server machines is under 50% (they were both at about 70-95% before). 

[Laura]

Hm, mine was already set to 8 and I am receiving the errors as well. 

[TomasPokorny]

@Laura same problem. We've got 8 instances and 11.3 clear installation with new projects from ArcGIS Pro, so no old relicts from previous upgrades and these errors occurs in log...

[RenéKobbernagel]

We are running 11.4, 6 instances pr machine and lots of errors. The number of instances can be set (at least in 11.4) under site>settings>pooling.

But when using the admin api and looking at the service in there, i see a maximum idle time value of 180 sec. I'm not aware of if that has been changed manually, but it seems really low to me.  The setting is also editable using server manager > system> dynamicmappinghost

[RenéKobbernagel]

according to notes on BUG-000147815 A this is fixed in 11.5....