The HTTP status code 100 response code

[idaoud]

Dear @M.serhan

Thanks for reaching out, Welcome to our community.

Based on the API response please not that this is new enhancement to prevent the TPs from submitting the same invoice,

This response means that you are trying to submit an invoice you already submitted.

Please find the below thread:
409 status code - Duplicate-Invoice error - Clearance and Reporting - Fatoora Developer Community

Thanks,
Ibrahem Daoud.