Unable to Fetch access token when tried using another account

[karthickbabuos]

I have generated an Yammer API key(client id and client secret) within a network and the API key is working across this network (same account). But when I try to use the same API key to access data from a different account it shows an error.

'Your network is not allowed to request an OAuth token for this Application'

Anyway to resolve this?

[mmierzwa]

https://zapier.com/help/yammer/#your-network-is-not-allowed-to-request-an-oauth-token-for-this-application

[superglue777]

Having the same situation, even when "3rd Party Applications" option is ON.
How I get this:
Created App in a network1. OAuth procedure goes smoothly here. But if I try to go OAuth in network2 for the same App (same id and secret), I get error when exchanging Code to a Token.
OAuth request details:
POST https://www.yammer.com/oauth2/access_token?client_id=<client-id>&client_secret=<client-secret>&code=<code-to-exchange>&grant_type=authorization_code
response body: Your network is not allowed to request an OAuth token for this Application