# Error 45003 Wrong client ID given
**URL:** https://forums.nylas.com/t/error-45003-wrong-client-id-given/457
**Category:** Question and Answers
**Created:** [September 19, 2024, 1:30pm UTC](https://forums.nylas.com/t/error-45003-wrong-client-id-given/457 "2024-09-19T13:30:48Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@Kateryna](https://forums.nylas.com/u/Kateryna)
#### Post date: [September 19, 2024, 1:30pm UTC](https://forums.nylas.com/t/error-45003-wrong-client-id-given/457/1 "2024-09-19T13:30:48Z")
Hello, please help me fix error. Why this request does not work. All worked yesterday.
This is my code, when I get code and api works i get error
```auto
const getGrand = async(token: string) => {
console.log(token, 'tocken')
try {
const response = await fetch('https://api.us.nylas.com/v3/connect/token', {
method: 'POST',
headers: {
'Content-Type': 'application/json',
Authorization: `Basic ${NylasConfig.apiKey}`,
},
body: JSON.stringify({
client_id: `${NylasConfig.clientIdNylas}`,
client_secret: `${NylasConfig.apiKey}`,
grant_type: 'authorization_code',
code: token,
redirect_uri:'http://localhost:8080/choosecalendar',
}),
});
if (!response.ok) {
throw new Error('Network response was not ok');
}
const dataConnectToken = await response.json();
console.log(dataConnectToken, 'dataConnectToken')
} catch (error) {
}
}
```
---
### Author:  [@Blag](https://forums.nylas.com/u/Blag)
#### Post date: [September 19, 2024, 1:59pm UTC](https://forums.nylas.com/t/error-45003-wrong-client-id-given/457/2 "2024-09-19T13:59:09Z")
Hello @Kateryna most likely you’re own grant has expired. Go to your dashboard and check. I had situations were my own samples start failing due to the same reason…
---
### Author:  [@Kateryna](https://forums.nylas.com/u/Kateryna)
#### Post date: [September 19, 2024, 2:33pm UTC](https://forums.nylas.com/t/error-45003-wrong-client-id-given/457/3 "2024-09-19T14:33:40Z")
@Blag Do I understand correctly, I need to check my Client ID or grand user?
I get the Client ID from my account, and this grand user does not exist. I send a token to the request and should receive a grand in response, and the user must appear in my account Nylas.
---
### Author:  [@Kateryna](https://forums.nylas.com/u/Kateryna)
#### Post date: [September 19, 2024, 2:48pm UTC](https://forums.nylas.com/t/error-45003-wrong-client-id-given/457/4 "2024-09-19T14:48:40Z")
@Blag i have problem with my client id which i use for develop. When i try other account for production all works corectly.
---
### Author:  [@Blag](https://forums.nylas.com/u/Blag)
#### Post date: [September 19, 2024, 2:49pm UTC](https://forums.nylas.com/t/error-45003-wrong-client-id-given/457/5 "2024-09-19T14:49:05Z")
@Kateryna What I mean is…
- Go to your dashboard and check if your own grant is valid or not
If it’s expired, delete it and add it again…this should fix your issue…