# ERROR 406 while using simulation api from .net application

**URL:** <https://zatca1.discourse.group/t/error-406-while-using-simulation-api-from-net-application/6031>\
**Category:** Onboarding, renewal and revocation\
**Created:** [February 25, 2025, 1:07pm UTC](https://zatca1.discourse.group/t/error-406-while-using-simulation-api-from-net-application/6031 "2025-02-25T13:07:32Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![sohrabus](https://avatars.discourse-cdn.com/v4/letter/s/cdc98d/32.png) [@sohrabus](https://zatca1.discourse.group/u/sohrabus)\
**Post date:** [February 25, 2025, 1:07pm UTC](https://zatca1.discourse.group/t/error-406-while-using-simulation-api-from-net-application/6031/1 "2025-02-25T13:07:33Z")

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Pls Help me why I m getting **below error**  
**The remote server returned an error: (406) Not Acceptable.**

URL : [https://gw-fatoora.zatca.gov.sa/e-invoicing/simulation/compliance](https://gw-fatoora.zatca.gov.sa/e-invoicing/simulation/compliance)  
{  
“csr”:"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  
S0tLS1FTkQgQ0VSVElGSUNBVEUgUkVRVUVTVC0tLS0tDQo=  
}

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<div class="post-metadata">

**Author:** ![sohrabus](https://avatars.discourse-cdn.com/v4/letter/s/cdc98d/32.png) [@sohrabus](https://zatca1.discourse.group/u/sohrabus)\
**Post date:** [February 27, 2025, 9:37am UTC](https://zatca1.discourse.group/t/error-406-while-using-simulation-api-from-net-application/6031/2 "2025-02-27T09:37:29Z")

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**Why I m getting Invalid OTP** whereas just now i generated OTP

{  
“csr”: “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”  
}

 ![simulation_error2](https://europe1.discourse-cdn.com/flex013/uploads/zatca1/original/1X/cbfc2a2fc0bdfcd0fc2ac102500dffba12ee79cb.png)

---

<div class="post-metadata">

**Author:** ![idaoud](https://avatars.discourse-cdn.com/v4/letter/i/f9ae1b/32.png) [@idaoud](https://zatca1.discourse.group/u/idaoud)\
**Post date:** [February 27, 2025, 10:09am UTC](https://zatca1.discourse.group/t/error-406-while-using-simulation-api-from-net-application/6031/3 "2025-02-27T10:09:04Z")

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Dear @sohrabus

Thanks for reaching out,

Can I kindly ask you to check and confirm if you are generating the OTP from fatoora/simulation portal and not fatoora/portal?

Thanks,  
Ibrahem doud.