Creates a new customer or updates an existing one based on the external ID. If a customer with the given external ID exists, it will be updated. Otherwise, a new customer will be created.
API key for authentication (required)
Merchant ID for identifying the merchant (required)
External customer ID from merchant system
"CUST-123"
Customer's first name
"John"
Customer's last name
"Doe"
Customer's email address
Customer's phone number
"+1234567890"
Whether the customer is active
true
Customer notification preferences
Customer created or updated successfully
External customer ID from merchant system
"CUST-123"
Customer's first name
"John"
Customer's last name
"Doe"
Customer's email address
Customer's phone number
"+1234567890"
Whether the customer is active
true
Customer notification preferences
Customer creation timestamp
"2024-03-20T10:00:00Z"
Customer last update timestamp
"2024-03-20T10:00:00Z"