Custom Request Body field while requesting token in Resource Owner Password Flow

Hi,

We have a query about requesting the access token and ID token in Resource Owner Password Credential flow. We have a requirement that while requesting the OAuth token there is a need of passing a string Key - value like other request body objects (grant_type,username,password,scope & redirect_uri).

We expect the request body to be send to the inline hook server by Okta. At present the inline hook sends the above mentioned Key - Values in the request.

Please share if there are any possible ways to address this requirement.

Regards,
Suresh Kumar