Unable to build the azure pipeline using azure playground

Hi Team,

Unable to build the azure pipeline using azure playground. i was trying to create azure pipeline for docker image build and push to azure container registery but i got below error.
it look like i dont have permission to create pipeline. is there any limitations on the playgrounds

Failed to set Azure permission ‘RoleAssignmentId: 47715cf8-60ea-43df-a68f-ace71a8a2f21’ for the service principal ‘c0f4c89b-3a2a-4505-81d5-610cd8d574d8’ on subscription ID ‘a2b28c85-1948-4263-90ca-bade2bac4df4’: error code: Forbidden, inner error code: AuthorizationFailed, inner error message The client ‘kk_lab_user_main-b912130553a84f3e@azurekmlprodkodekloud.onmicrosoft.com’ with object id ‘3e3c93a4-1549-4ab7-b900-5c5b26deafb2’ does not have authorization to perform action ‘Microsoft.Authorization/roleAssignments/write’ over scope ‘/subscriptions/a2b28c85-1948-4263-90ca-bade2bac4df4/resourceGroups/kml_rg_main-b912130553a84f3e/providers/Microsoft.ContainerRegistry/registries/azureagentacr/providers/Microsoft.Authorization/roleAssignments/47715cf8-60ea-43df-a68f-ace71a8a2f21’ or the scope is invalid. If access was recently granted, please refresh your credentials. Ensure that the user has ‘Owner’ or ‘User Access Administrator’ permissions on the Subscription.

The playgrounds have a list of what they allow and what they don’t allow in the launch page. Please look those over; it’s difficult to tell what exactly the error message is telling us here, so start with that.