# Signing Invoice ( Simplified Invoice B2C )

**URL:** <https://zatca1.discourse.group/t/signing-invoice-simplified-invoice-b2c/3100>\
**Category:** Signing process\
**Created:** [September 18, 2024, 10:15am UTC](https://zatca1.discourse.group/t/signing-invoice-simplified-invoice-b2c/3100 "2024-09-18T10:15:44Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![Madleen](https://avatars.discourse-cdn.com/v4/letter/m/fbc32d/32.png) [@Madleen](https://zatca1.discourse.group/u/Madleen)\
**Post date:** [September 24, 2024, 7:43am UTC](https://zatca1.discourse.group/t/signing-invoice-simplified-invoice-b2c/3100/5 "2024-09-24T07:43:44Z")

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Dear @idaoud ,

Yes, I’m using zatca SDK3.3.4 (.net).  
i’m doning the steps in this pdf but not correctly , so i want more clarification to signing simplified invoice.

> [@Invalid signed properties hashing, SignedProperties with id='xadesSignedProperties'](https://zatca1.discourse.group/t/invalid-signed-properties-hashing-signedproperties-with-id-xadessignedproperties/2525/2):
>
> [SigningProcessUpdated.pdf](https://zatca1.discourse.group/uploads/short-url/vlHNRGtXbkw5sv40gchVevwarmQ.pdf) (927.7 KB)

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