when validating the invoice it keeps getting this result using .NET Sdk using test certificate and privatekey. When validating using [fatooranet] it gets diff result.
Kindly be informed that sandbox environment is just to clarify the onboarding steps, the onboarding process considered as successful only on Simulation or Production Environments.
Kindly follow the same steps during the Simulation environment to ensure the full understanding of the correct steps for a successful integration with ZATCA before proceeding to Production Env, and If you faced and issues or Misunderstanding of any steps through the onboarding process; do not hesitate to reach out.