Missing custom attributes in response of SCIM REST API

Dear all,

Here is one problem which needs your help. Steps are followed:

(1) Login the SAP Cloud Platform Identity Authentication system. Link: https://xxx.accounts400.ondemand.com/admin

(2) Choose Users & Authorizations -> Import Users

(3) Import user CSV file with user attributes, then will see successfully updated.

(4) Then call User Resource API with GET method (included in SCIM REST API).API link:

https://help.sap.com/viewer/6d6d63354d1242d185ab4830fc04feb1/Cloud/en-US/2f215687fcf34170b0bbc8b36b60f2e9.html#loio7ae17a6da5314246a04d113f902d0fdf

Then I find it that there is no information of custom attribute in response which I have imported in CSV file.

So how can I get such custom attribute information of specific user through calling API?

Thanks in advance.