To authenticate API requests, we use a combination of business Api secrets and a developer account user ID. Every transaction logged in the system is accompanied by the specific user which performed the operations and thats the reason as to why we have the developer User Id.
These are the required header parameters
x-rest-api-key : [PUT YOUR API KEY HERE]
x-rest-api-secret : [PUT YOUR API SECRET HERE]
x-rest-user : [PUT YOUR DEV USER ID HERE]
Get your developer details here https://app.pesatime.com/business/developer