We have a system, where we want to push the records (e.g. Contact, Account, Opportunity) from our system to SalesForce.
To achieve this, we have used ForceToolKit for .Net. We are successfully pushing the contact records from our system to Salesforce.
First customer has to provide the consumer key and secret and upon providing these details, the user will be redirected to Salesforce login page for OAuth. We are storing the RefreshToken and it will be used at the time of Data push.
Here, if user provides incorrect consumer key, then it is redirecting to Salesforce login page and shows below message:
error=invalid_client_id&error_description=client%20identifier%20invalid
Now, we have to validate the Consumer key & secret before it redirects to Salesforce URL and check if it is valid or not.
Can anyone help me on how to achieve this?