Issue while trying to implement Paypal Create Order API - php

Question

About the issue
This is about create order api in Paypal. Documentation link is here I am trying to pass below payload, so that the request could have my return and cancel url and everything works perfectly.
"intent": "CAPTURE",
"purchase_units": [
{
"amount": {
"currency_code": "USD",
"value": "100.00"
}
}
],
"application_context" => [
"return_url" => "my return url",
"cancel_url" => "my cancel url"
]
Just the return and cancel url has gone deprerated in application_context.
To overcome this problem, I removed application_context from payload and added payment_source like below which has return and cancel url
"intent": "CAPTURE",
"purchase_units": [
{
"amount": {
"currency_code": "USD",
"value": "100.00"
}
}
],
"payment_source": {
"paypal": {
"experience_context": {
"return_url": "return Url",
"cancel_url": "cancel Url"
}
}
}
Now, it gives an error message - PAYPAL_REQUEST_ID_REQUIRED
I need to pass return and cancel url and at this stage I only need to create the request to let user go to checkout page. that's it. I really don't have any payment info yet.

Answer 1

To resolve the error message "PAYPAL_REQUEST_ID_REQUIRED", you need to including a unique identifier in the "request_id" field in the payload.
something like:
[
"intent":"CAPTURE",
"purchase_units":[
{
"amount":{
"currency_code":"USD",
"value":"100.00"
}
}
],
"payment_source":{
"paypal":{
"experience_context":{
"return_url":"return Url",
"cancel_url":"cancel Url"
}
}
},
"request_id":"UNIQUE_REQUEST_ID"
]
You may also verify that the return and cancel URLs provided in the payload are valid and accessible.

Answer 2

Inside your payment_source add "request_id": "YOUR_UNIQUE_REQUEST_ID"
Your system can generate this request Id yourself and must be unique to prevent getting error message DUPLICATED_REQUEST_ID
See here in documentation https://developer.paypal.com/api/rest/requests
PayPal-Request-Id
"Optional. Contains a unique user-generated ID that the server stores for a period of time. Use this header to enforce idempotency on REST API POST calls. ...."

Answer 3

You need request_id could you try including reference_id.
{
"intent": "CAPTURE",
"purchase_units": [
{
"reference_id": "d9f80740-38f0-11e8-b467-0ed5f89f718b",
"amount": {
"currency_code": "USD",
"value": "100.00"
}
}
],
"payment_source": {
"paypal": {
"experience_context": {
"return_url": "https://example.com/returnUrl",
"cancel_url": "https://example.com/cancelUrl"
}
}
}
}'

Answer 4

https://developer.paypal.com/api/rest/reference/orders/v2/errors/
PAYPAL_REQUEST_ID_REQUIRED: A PayPal-Request-Id is required if you are trying to process payment for an Order. Please specify a PayPal-Request-Id or Create the Order without a payment_source specified.
Add this param in your headers
PayPal-Request-Id
string [ 1 .. 36 ] characters
The server stores keys for 6 hours. The API callers can request the times to up to 72 hours by speaking to their Account Manager.