Pinterest credential ,token error

I have received the auth token but i am not able to post board using it…
I am getting the following error in postman response:
{
“status”: “failure”,
“code”: 3,
“data”: null,
“message”: “Authorization failed.”,
“endpoint_name”: “create_board”
}
Please can anyone help me resolve this…

in place of board, use board ID
Ping me if this is not resolved

I guess I did’nt explain my problem corrrectly,I am working on qeats sneakpeek:social review.
I am on module 3 ,milestone 1,pinterest credentials.
I followed the steps in document attached to get the access token,
but when i tired to validate it ,it was returing an error.
I imorted the curl and sent it in postman,ideally i should get id in return response but i am getting ,this response:
{
“status”: “failure”,
“code”: 3,
“data”: null,
“message”: “Authorization failed.”,
“endpoint_name”: “create_board”
}