# Updating NIC Credentials in ClearTax
#### Step 1- Open Settings panel
‌Login to E-Invoicing portal and navigate to settings on top right under your username. Click on settings.
####
#### Step 2- Select GSTIN
Under the Business Settings tab, select the GSTIN for which you want to change the NIC Credentials.
####
#### Step 3- Update the Username/password and Save
In the screen update the '**NIC API Username**' and '**NIC API Password**' and click on **save** on the top right of the screen.
The process of updating the NIC Credentials is complete.
---
# Agent Instructions: Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter:
```
GET https://docs.cleartax.in/e-invoicing/guides/getting-started/updating-nic-credentials-in-cleartax.md?ask=
```
The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.