> For the complete documentation index, see [llms.txt](https://docs.cleartax.in/product-help-and-support/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.cleartax.in/product-help-and-support/clear-finance-cloud/cleare-invoicing/authorising-clear-to-generate-irn.md).

# Authorising Clear to generate IRN

In order for users to generate IRN through Clear eInvoicing portal, they need to authorise Clear first. This can be done by creating API credentials on IRP (ClearIRP/NIC) and adding it to the product.

Detailed flow of the onboarding and setup is covered in the [video](https://drive.google.com/file/d/16EAO_0EZzteN33yve6AHenOSZYyX60Iw/view).

### Authorising on ClearIRP

{% content-ref url="/pages/lrjtnfvHn2ZRvkAThUeP" %}
[How do I register my GSTIN on ClearIRP from Clear eInvoicing?](/product-help-and-support/clear-finance-cloud/cleare-invoicing/settings-configurations/clearirp-api-credentials/how-do-i-register-my-gstin-on-clearirp-from-clear-einvoicing.md)
{% endcontent-ref %}

{% content-ref url="/pages/IUKiwiAGkxMjMudtS1Vo" %}
[How do I create API creds if my GSTIN is already registered?](/product-help-and-support/clear-finance-cloud/cleare-invoicing/settings-configurations/clearirp-api-credentials/how-do-i-create-api-creds-if-my-gstin-is-already-registered.md)
{% endcontent-ref %}

{% content-ref url="/pages/jUbMQdGMVfr9IB32vUYQ" %}
[I have already created API credentials for my GSTIN, how do I add them?](/product-help-and-support/clear-finance-cloud/cleare-invoicing/settings-configurations/clearirp-api-credentials/i-have-already-created-api-credentials-for-my-gstin-how-do-i-add-them.md)
{% endcontent-ref %}

### Authorising on NIC

{% content-ref url="/pages/-MaF1SR6tkTlM-uV8GTS" %}
[NIC Credentials](/product-help-and-support/clear-finance-cloud/cleare-invoicing/settings-configurations/nic-credentials.md)
{% endcontent-ref %}

{% content-ref url="/pages/-M\_4ec41JWiAt1zqy6bw" %}
[Register Defmacro as GSP](/product-help-and-support/clear-finance-cloud/cleare-invoicing/get-started-with-cleare-invoicing/account-setup/register-defmacro-as-gsp.md)
{% endcontent-ref %}