Microsoft Graph Add attachment API doesnt work

Question

POST API- https://graph.microsoft.com/v1.0/me/events/AAMkAGI1AAAt9AHjAAA=/attachments

https://learn.microsoft.com/en-us/graph/api/event-post-attachments?view=graph-rest-1.0&tabs=http

{
"@odata.type": "#microsoft.graph.fileAttachment",
"name": "menu.txt",
"contentBytes": "base64bWFjIGFuZCBjaGVlc2UgdG9kYXk="
}

Response - Getting 400 error code with below error mesage-
{
"error": {
"code": "UnableToDeserializePostBody",
"message": "were unable to deserialize "
}
}

Answer 1

Hi @persistent_test ,

You are getting UnableToDeserializePostBody error because in the contentBytes there is base64 appended before the code. Could you please try to remove base64 from the contentBytes?

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Answer 2

Thanks for your reply, I tired by removing "base64", still its not working, getting below error message-

{
"error": {
"code": "ErrorItemNotFound",
"message": "The specified object was not found in the store.",
"innerError": {
"date": "2022-04-18T09:23:01",
"request-id": "de74783a-e672-443d-bb5a-adecae2429ce",
"client-request-id": "de74783a-e672-443d-bb5a-adecae2429ce"
}
}
}