# eBay API error 1001: Invalid access token
# Common cause
Expired token: Access tokens don't last long, typically just a few hours. This happens when you make an API call with an old token.
# Sample output
{
"errors" : [ {
"errorId" : 1001,
"domain" : "OAuth",
"category" : "REQUEST",
"message" : "Invalid access token",
"longMessage" : "Invalid access token. Check the value of the Authorization HTTP request header."
} ]
}