Type of Kubernetes secret created by using OnePasswordItem

Is there any documentation for how to create a dockerconfigjson secret? What item type in 1Password do we use?

{"level":"error","ts":1651258391.7674685,"logger":"controller-runtime.controller","msg":"Reconciler error","controller":"onepassworditem-controller","request":"runtime/oim-messages-platform-registry","error":"Secret \"oim-messages-platform-registry\" is invalid: data[.dockerconfigjson]: Required value","stacktrace":"github.com/go-logr/zapr.(*zapLogger).Error\n\t/workspace/vendor/github.com/go-logr/zapr/zapr.go:128\nsigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).reconcileHandler\n\t/workspace/vendor/sigs.k8s.io/controller-runtime/pkg/internal/controller/controller.go:258\nsigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).processNextWorkItem\n\t/workspace/vendor/sigs.k8s.io/controller-runtime/pkg/internal/controller/controller.go:232\nsigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).worker\n\t/workspace/vendor/sigs.k8s.io/controller-runtime/pkg/internal/controller/controller.go:211\nk8s.io/apimachinery/pkg/util/wait.BackoffUntil.func1\n\t/workspace/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:155\nk8s.io/apimachinery/pkg/util/wait.BackoffUntil\n\t/workspace/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:156\nk8s.io/apimachinery/pkg/util/wait.JitterUntil\n\t/workspace/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:133\nk8s.io/apimachinery/pkg/util/wait.Until\n\t/workspace/vendor/k8s.io/apimachinery/pkg/util/wait/wait.go:90"}