A project ID is required for some URLs when an API is called. Therefore, you need to obtain a project ID in advance. Two methods are available:
You can obtain the project ID by calling the IAM API used to query project information based on the specified criteria.
The API used to obtain a project ID is GET https://{Endpoint}/v3/projects. {Endpoint} is the IAM endpoint and can be obtained from Regions and Endpoints.
The following is an example response. The value of id is the project ID.
{
"projects": [
{
"domain_id": "65ewtrgaggshhk1223245sghjlse684b",
"is_domain": false,
"parent_id": "65ewtrgaggshhk1223245sghjlse684b",
"name": "project_name",
"description": "",
"links": {
"next": null,
"previous": null,
"self": "https://www.example.com/v3/projects/a4adasfjljaaaakla12334jklga9sasfg"
},
"id": "a4adasfjljaaaakla12334jklga9sasfg",
"enabled": true
}
],
"links": {
"next": null,
"previous": null,
"self": "https://www.example.com/v3/projects"
}
}
On the My Credentials page, view project IDs in the project list.

In multi-project scenarios, expand the region, and obtain your sub-project ID from the Project ID column.