I run a process that reads out of ESRI modifies some data and writes it back into the layer. This worked in AGOL but now that we moved to OnPremise version of ArcGIS I can't get it to work. The only difference I can see after replacing the read and write nodes is that the Type field in the user attributes tab doesn't maintain its esriField Types and defaults to string.
When writing back I get an error saying ObjectId is missing but this field is in the data set.
+32
Not an expert but did you doublecheck the attributename is correct? Schema is case sensitive. Check for the name, not the alias.
Yes, the field names are correct. 
+15
Hi @ben.dawson thanks for your question! It would be helpful to have a sample of your workspace to know how the ChangeDetector is set up and see exactly which fields are present. We might be able to come up with a solution with more information.
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