# Antna's API Documentation

**URL:** <https://zatca1.discourse.group/t/antnas-api-documentation/3679>\
**Category:** General\
**Created:** [October 16, 2024, 7:39am UTC](https://zatca1.discourse.group/t/antnas-api-documentation/3679 "2024-10-16T07:39:26Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![kalaiarasan](https://avatars.discourse-cdn.com/v4/letter/k/f19dbf/32.png) [@kalaiarasan](https://zatca1.discourse.group/u/kalaiarasan)\
**Post date:** [October 16, 2024, 7:39am UTC](https://zatca1.discourse.group/t/antnas-api-documentation/3679/1 "2024-10-16T07:39:26Z")

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iam use postman signUp ,signIn run but Onboarding not a run  
this erorr:  
“errors”: [  
{  
“code”: “400”,  
“message”: “EGS with serial number: 1-TST|2-TST|3-ab23dcv23nk2-e6a2-1118-9b58-d9a8f11e44yt is already onboarded!”  
}  
]

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**Author:** ![idaoud](https://avatars.discourse-cdn.com/v4/letter/i/f9ae1b/32.png) [@idaoud](https://zatca1.discourse.group/u/idaoud)\
**Post date:** [October 16, 2024, 7:43am UTC](https://zatca1.discourse.group/t/antnas-api-documentation/3679/2 "2024-10-16T07:43:36Z")

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Dear @kalaiarasan

Can I kindly ask you:  
1- Did you finish the educational library?  
2- What is the end point (API) that gives you this error?

Thanks,  
Ibrahem Daoud.

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<div class="post-metadata">

**Author:** ![kalaiarasan](https://avatars.discourse-cdn.com/v4/letter/k/f19dbf/32.png) [@kalaiarasan](https://zatca1.discourse.group/u/kalaiarasan)\
**Post date:** [October 20, 2024, 7:58am UTC](https://zatca1.discourse.group/t/antnas-api-documentation/3679/3 "2024-10-20T07:58:44Z")

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Sir No i’m Search for many website , see Zatca E-invoicing this website so i follow those steps but Not working Serial Number is Onboarded this erorr

i’m Not finish Educational library …just now i see that link not open …in chrome

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**Author:** ![lalomar](https://avatars.discourse-cdn.com/v4/letter/l/5e9695/32.png) [@lalomar](https://zatca1.discourse.group/u/lalomar)\
**Post date:** [October 23, 2024, 12:01pm UTC](https://zatca1.discourse.group/t/antnas-api-documentation/3679/4 "2024-10-23T12:01:31Z")

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Dear @kalaiarasan ,

Kindly note that this response is not expected from ZATCA’s side, are you using another solution or a middleware?

However, we generally advise you to not onboard 2 devices with the same serial number as this field should be unique for every EGS device. Therefore, we can suggest a solution for your problem to change the serial number in the CSR configuration file because It seems that there is a device that is already onboarded with the same serial number, but please note that this solution is not guaranteed as this response error is not expected from ZATCA

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<div class="post-metadata">

**Author:** ![kalaiarasan](https://avatars.discourse-cdn.com/v4/letter/k/f19dbf/32.png) [@kalaiarasan](https://zatca1.discourse.group/u/kalaiarasan)\
**Post date:** [October 24, 2024, 7:41am UTC](https://zatca1.discourse.group/t/antnas-api-documentation/3679/5 "2024-10-24T07:41:08Z")

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“I have completed testing the invoice creation in [Postman], but I don’t know what the next step is. Can you guide me on what to do next?”

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<div class="post-metadata">

**Author:** ![lalomar](https://avatars.discourse-cdn.com/v4/letter/l/5e9695/32.png) [@lalomar](https://zatca1.discourse.group/u/lalomar)\
**Post date:** [October 24, 2024, 8:42am UTC](https://zatca1.discourse.group/t/antnas-api-documentation/3679/6 "2024-10-24T08:42:06Z")

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Can you explain what do you mean by testing the invoices in postman? So did you complete the compliance checks? if yes, then now you can generate the PCSID

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<div class="post-metadata">

**Author:** ![kalaiarasan](https://avatars.discourse-cdn.com/v4/letter/k/f19dbf/32.png) [@kalaiarasan](https://zatca1.discourse.group/u/kalaiarasan)\
**Post date:** [October 28, 2024, 9:11am UTC](https://zatca1.discourse.group/t/antnas-api-documentation/3679/7 "2024-10-28T09:11:18Z")

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yes i generated postman CSID …what is next step …

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<div class="post-metadata">

**Author:** ![lalomar](https://avatars.discourse-cdn.com/v4/letter/l/5e9695/32.png) [@lalomar](https://zatca1.discourse.group/u/lalomar)\
**Post date:** [November 3, 2024, 12:22pm UTC](https://zatca1.discourse.group/t/antnas-api-documentation/3679/8 "2024-11-03T12:22:10Z")

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Is the CSID you generated a Production CSID or a Compliance CSID?  
Did you obtain it in a simulation or production environment?

If you obtained the PCSID in a production environment, then you can submit your invoices to clearance and reporting using the obtained CSID.

Thanks,