This error seems to be pretty sporadic and I've found absolutely no rhyme or reason to it, but this error has been occurring when trying to update an existing point with an attachment and attributes in Field Maps. Restarting the device seems to solve the issue most of the time, but its happened on both Android and iPhone devices for multiple users. I pulled the Field Apps error log and it was blank of any messages however the ArcGIS server log does show this.
SEVERE | Feb 26, 2024, 3:58:13 PM | Error: Unsupported request name. | *****/*****MapServer |
SEVERE | Feb 26, 2024, 3:58:13 PM | Unsupported request name.***** | *****/*****.MapServer |