I have read many forum posts about this issue without getting to an answer. I can find the field I wish to set using “where is my field” and the information returned states:
Project and issue type scope
Field ‘Amount’ is in scope of the project ‘TX_V2’ and issue type ‘TX’
Field configuration
The ‘Amount’ field is enabled by the ‘Default Field Configuration’ field configuration associated with this issue.
Field Screen
The field ‘Amount’ is present on the screen ‘V2TX: Project Management Create Issue Screen’ configured for this issue.
Then in Python I get the error:
{"errorMessages":[],"errors":{"amount":"Field 'amount' cannot be set. It is not on the appropriate screen, or unknown."}}