Notes:
In create, you can only use Insert mode. The update can be insert, update or delete.
In create, if you don't delete the original Feature Service, the output accumulates. (1 liked)
There will be a lots of limitations for the writer updating operations in the FMW, here are some examples and solutions:
Problem 1
Can’t change java date string to ArcGis date field
Solution
Add transformer DateTimeConverter to change the date
@DateTimeFormat(@DateTimeNow(), %Y-%m-%d)
Problem 1
Problem 2
ArcGIS Portal Feature Service Writer: Encountered an unexpected error. The error code from the server was '500' and the message was: 'JSONObject["globalId"] not found.'. Details: ''
Solution 2
when creating writer of the feature layer, please use the Global id
Problem 3
Add CRCCalculator transformer if the source data has no real unique id
Solution 3
