Inserting a line in AR INTERFACE LINES within SOAP

Summary:

Inserting a line in AR INTERFACE LINES within SOAP service produce an error

Content (please ensure you mask any confidential information):

We are using this WSDL:

https://servername/fscmService/RecInvoiceService?WSDL

for inserting a line in AR_INTERFACE_LINES (within Postman), but we ever receive the error:

"401 Unauthorized"

How can solve this issue?
My goal is insert a record in AR_INTERFACE_LINES.

Thanks in advance

Version (include the version you are using, if applicable):

Oracle Fusion Cloud Applications
24C (11.13.24.07.0)

Code Snippet (add any code snippets that support your topic, if applicable):

https://servername/fscmService/RecInvoiceService?WSDL