I had created a password with Application Passwords,
But when I was trying to request WordPress API to create a post with Postman Basic Auth and also curl command, I got this error:
{
"code": "invalid_username",
"message": "<strong>Error</strong>: Unknown username. Check again or try your email address.",
"data": {
"status": 401
}
}
The reason why I got this error is because I used Application Password Name as username.
The correct way is using REAL username as username when requesting, not the Application Name.