I am trying to update a custom field of a ticket but it appears me the error 401.
The header is wrotten two times
Based on the error message and image you shared, it seems like there is a problem with the authorization of your PUT request. I see that Mariam_Akif mentioned that the header is written twice which could be causing the issue.
When you send a request with headers in HTTP, each header needs to be written once in the following format:
Header: value
If the header is written twice, it could cause confusion and an error such as the one you are experiencing.
I would recommend checking your code to make sure you are not duplicating the headers and that you are using the correct authentication method.
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