oauth return url pesapal code example

Example: pesapal payment gateway response

Use this to query the status of the transaction. When a transaction is posted
to PesaPal, it may be in a PENDING, COMPLETED or FAILED state. If the 
transaction is PENDING, the payment may complete or fail at a later stage.

Both the unique order id generated by your system and the pesapal tracking
id are required as input parameters.