We're trying to write data to a blob type field using the ArcGIS JS API version 4.3 using AddFeatures REST service and have been completely unsuccessful. We are able to write to other field types without issue.
Feature Service is hosted on ArcGIS Server 10.3. Feature Class is on an Enterprise PostGRE Geodatabase.
When we attempt to write to the 'blobtext' field, or any field of type 'blob' we get the error below.