Since 3/3/2020 "https://app.asana.com/api/1.0/tasks" failed with error "custom_fields: Value cannot be an array: []"

[anon83546776]

Since 3/3/2020, our api call to “https://app.asana.com/api/1.0/tasks” has stopped working with the exception error “custom_fields: Value cannot be an array: ”. Below is the sample body of the url that was sent out with all the ids been replaced:
{:name=>“(For testing only) test item”,
:workspace=> 33333333,
:notes=>" sample noe ",
:projects=>“11111111110000”,
:due_on=>Wed, 04 Mar 2020,
:custom_fields=>[{11111111111=>22222222}]}

Error:
"{"errors":[{"message":"custom_fields: Value cannot be an array: ","help":"For more information on API status codes and how to handle them, read the docs on errors: Build an app with Asana

This code has not been changed and was working until yesterday morning 3/3/2020. Just wonder if Asana has changed this api recently.

Regards,
Tony.

[Phil_Seeman]

Hi @anon83546776 and welcome to the forum,

Yes, it seems there was a recent change - see this thread for more info:

Api error: custom_fields: Value cannot be an array: []

We’ve been having this bug all of sudden. This breaks our integration with Asana (used to created tasks). We have changed nothing to the way we format custom fields when creating tasks through the API. Is it possible that something changed in Asana that breaks this?

If the existing solutions given there don’t help you, you might want to add onto that thread rather than post more here, so that the discussion can be more centralized.