To create your own System for Cross-domain Identity Management (SCIM) 1.1 application, you must download the SCIM 1.1 SDK.
SCIM is an open initiative designed to make moving identity data to, from, and between clouds standard, secure, fast, and easy. The SCIM SDK is a pre-packaged collection of libraries and extensible classes that provides developers with a simple, concrete API to interact with a SCIM service provider.
The SCIM 1.1 SDK is available for download at https://github.com/pingidentity/scim.
The value of a read-only SCIM attribute can be set by a POST operation if the SCIM attribute is a custom attribute in the scim-resource.xml config file, but not if the SCIM attribute is a core SCIM attribute.