Unable to create Recievables Invoice using REST API ; 400 Bad request

Summary:

Unable to create Recievables Invoice using REST API. Document followed: https://docs.oracle.com/en/cloud/saas/financials/23c/farfa/op-receivablesinvoices-post.html

I am getting 400 bad request on submitting the POST request.

FYI: Write off-limit has been set too.

I'm not able to identify what is wrong with the payload as the error message doesn't specify which field is giving the issue

API: host:/fscmRestApi/resources/11.13.18.05/receivablesInvoices

Payload: {

"BillingDate": null,

"BillToCustomerNumber": "46004",

"BillToSite": "40001",

"BusinessUnit": "RETAL_BU",

"Comments": "Created through API",

"DueDate": "2023-08-19",

"InternalNotes": "Created through API",

"InvoiceCurrencyCode": "SAR",

"PaymentTerms": "IMMEDIATE",

"TransactionDate": "2021-08-07",

"TransactionSource": "Individual Transaction",

"ShipToCustomerName": null,

"ShipToCustomerNumber" : null,