Mandatory fields in Invoice Schema clarification

Dear NRS,

Invoice Schema stated below elements are mandatory.

State

LGA

Seller Identification

Fee Rate, Fee Amount

Discount Rate, Discount Amount

When my system integrator create the XML invoice without all the above elements and validate the XML invoice with the MBS Validation API, XML invoice passed the validation without error.

Are these elements mandatory or not mandatory?

Please advise.

Thank you

Dear @SystemAdmin

Can you please kindly answer this question.

Thank you very much