Is there any number restriction of sub folders in graph drives API ?

Question

When there exits 27 sub folders,
　/1/2/3/4/5/6/7/8/9/10/11/12/13/14/15/16/17/18/19/20/21/22/23/24/25/26/27
it is possible to get folder list in 27th sub folder like this.
GET https://graph.microsoft.com/v1.0/drives/{drive ID}/root:{folder path}:/children?filter=folder%20ne%20null

But it is failed to get folder list in 28th sub folder.
　/1/2/3/4/5/6/7/8/9/10/11/12/13/14/15/16/17/18/19/20/21/22/23/24/25/26/27/28
"error": {
"code": "UnknownError",
"message": "～～～The resource you are looking for might have been removed, had its name changed, or is temporarily unavailable.～～～",
"innerError": {
"date": "2021-10-20T01:45:10",
"request-id": "7e07f492-543b-4e3d-9348-492a25f55033",
"client-request-id": "7e07f492-543b-4e3d-9348-492a25f55033"

In this situation, if I use the {folder ID} not {folder path}, it works.
GET https://graph.microsoft.com/v1.0/drives/{drive ID}/items/{folder ID}/children?filter=folder%20ne%20null

Is there any number restriction of sub folders in graph drives API ?

Answer 1

Hi @Yumihiko Tsuzuki ,

Per my test, I could reproduce this issue on my end. And when I add sites/{siteID} in the endpoint, like https://graph.microsoft.com/v1.0/sites/{siteID}/drives/{drive ID}/root:{folder path}:/children. The result is different, I could only get content in the 25th subfoler.

Conclusion: Graph has number restriction for slash character(/) in the endpoint. And per my test the max number is about 30.

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