Unable to Create Subscription Using REST Account

[bh49]

I have created a PayPal sandbox applications, Using the Rest business dashboard, I have created one subscription plan. When I am trying to create a subscription using the REST Endpoint along with Client Credentials in the postman tool and providing the same plan ID which is being used to do an action of Create Subscription. I noticed that an error of resource Id does not exist. 

REST Business Dashboard - 

An Error Encountered while doing the POST Request for create operation on the subscription.

REST API ENDPOINT - https://api-m.sandbox.paypal.com/v1/billing/subscriptions

Body - 

{

"plan_id":"P-8TB14087NW268561JM37HS4A"

}

ERROR - 

{

"name": "RESOURCE_NOT_FOUND",

"message": "The specified resource does not exist.",

"debug_id": "f97488533272b",

"details": [

{

"issue": "INVALID_RESOURCE_ID",

"description": "Requested resource ID was not found."

}

],

"links": [

{

"href": "https://developer.paypal.com/docs/api/v1/billing/subscriptions#RESOURCE_NOT_FOUND",

"rel": "information_link",

"method": "GET"

}

]

}

Also, it lists the record of subscriptions table using REST Endpoint and Credentials if provided the plan Id of the SOAP account, which is the wrong behaviour.

Please let me know if anyone has come across to this issue.
Thanks.