Call data from a feature layer of ArcGIS online (just the data table) to APPIAN,

Question

i want to call data from a feature layer of ArcGIS online (just the data table) to APPIAN, 
 
 Fist I have created the OAuth 2.0 Credentials in ArcGIS for developers, then I'm trying to create a connected system in APPIAN to call that data, this are the parameter i have added: 
 
 Authentication: OAuth 2.0 Authorization code grant 
 Authorization Endpoint: www.arcgis.com/.../authorize 
 Client ID: X6nKvzhPa57iYtDy 
 Client Secret: &bull;&bull;&bull;&bull;&bull;&bull;&bull;&bull;&bull;&bull;&bull;&bull;&bull;&bull;&bull;&bull;&bull;&bull;&bull;&bull;&bull;&bull;&bull;&bull;&bull;&bull;&bull;&bull;&bull;&bull;&bull;&bull; 
 Token Request Endpoint: www.arcgis.com/.../ 
 
 i test the connected system, but show me this error (image bellow)

Help please.......

Mathieu Drouin · Answer

Did you try client credentials grant instead of code grant?

Call data from a feature layer of ArcGIS online (just the data table) to APPIAN,

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