We will be adding support for setting and retrieving the ec_status of
Bills, Estimates, Expenses and Bank Transaction Explanations later this
week. This will be handled consistently with the current behaviour for
Invoices where ec_status can be specified by giving the status name.
You can find more details on our API Development Trello Board
We are aware that there is a bug in the current behaviour where integer
values would instead be returned from these resources when ec_status is
set. If your application is currently handling these incorrect values, you
should update your code to accept the new format. Apologies for any
inconvenience this may cause.