IndustryData-SourceSystem.ReadWrite.All

const options = {
	authProvider,
};

const client = Client.init(options);

const sourceSystemDefinition = {
  displayName: 'Rostering source',
  userMatchingSettings: [
    {
      matchTarget: {
        code: 'userPrincipalName'
      },
      priorityOrder: 0,
      '[email protected]': 'https://graph.microsoft.com/beta/external/industryData/roleGroups/staff',
      sourceIdentifier: {
        code: 'username'
      }
    },
    {
      matchTarget: {
        code: 'userPrincipalName'
      },
      priorityOrder: 1,
      '[email protected]': 'https://graph.microsoft.com/beta/external/industryData/roleGroups(\'students\')',
      sourceIdentifier: {
        code: 'username'
      }
    }
  ]
};

await client.api('/external/industryData/sourceSystems')
	.version('beta')
	.post(sourceSystemDefinition);

Import-Module Microsoft.Graph.Beta.Search

$params = @{
	displayName = "Rostering source"
	userMatchingSettings = @(
		@{
			matchTarget = @{
				code = "userPrincipalName"
			}
			priorityOrder = 0
			"[email protected]" = "https://graph.microsoft.com/beta/external/industryData/roleGroups/staff"
			sourceIdentifier = @{
				code = "username"
			}
		}
		@{
			matchTarget = @{
				code = "userPrincipalName"
			}
			priorityOrder = 1
			"[email protected]" = "https://graph.microsoft.com/beta/external/industryData/roleGroups('students')"
			sourceIdentifier = @{
				code = "username"
			}
		}
	)
}

New-MgBetaExternalIndustryDataSourceSystem -BodyParameter $params

# Code snippets are only available for the latest version. Current version is 1.x
from msgraph_beta import GraphServiceClient
from msgraph_beta.generated.models.industry_data.source_system_definition import SourceSystemDefinition
from msgraph_beta.generated.models.industry_data.user_matching_setting import UserMatchingSetting
from msgraph_beta.generated.models.industry_data.user_match_target_reference_value import UserMatchTargetReferenceValue
from msgraph_beta.generated.models.industry_data.identifier_type_reference_value import IdentifierTypeReferenceValue
# To initialize your graph_client, see https://learn.microsoft.com/en-us/graph/sdks/create-client?from=snippets&tabs=python
request_body = SourceSystemDefinition(
	display_name = "Rostering source",
	user_matching_settings = [
		UserMatchingSetting(
			match_target = UserMatchTargetReferenceValue(
				code = "userPrincipalName",
			),
			priority_order = 0,
			source_identifier = IdentifierTypeReferenceValue(
				code = "username",
			),
			additional_data = {
					"role_group@odata_bind" : "https://graph.microsoft.com/beta/external/industryData/roleGroups/staff",
			}
		),
		UserMatchingSetting(
			match_target = UserMatchTargetReferenceValue(
				code = "userPrincipalName",
			),
			priority_order = 1,
			source_identifier = IdentifierTypeReferenceValue(
				code = "username",
			),
			additional_data = {
					"role_group@odata_bind" : "https://graph.microsoft.com/beta/external/industryData/roleGroups('students')",
			}
		),
	],
)

result = await graph_client.external.industry_data.source_systems.post(request_body)