Retrieve the ingest policy

{  "builtinEvents": [    {      "key": "$app_installed",      "name": "App installed",      "description": "First launch after a fresh install, used for install and acquisition counts.",      "eventNames": [        "$app_installed"      ],      "isEnabled": true,      "isDefaultEnabled": true,      "isOverridden": false,      "warning": null    },    {      "key": "$screen",      "name": "Screen views",      "description": "Every screen the user lands on, with the previous screen and time spent there. The highest-volume built-in event.",      "eventNames": [        "$screen"      ],      "isEnabled": true,      "isDefaultEnabled": true,      "isOverridden": false,      "warning": null    }  ],  "blockedCustomEvents": [    "debug_tap"  ]}

{  "error": {    "type": "invalid_request",    "code": "string",    "message": "string",    "param": "string"  }}

{  "error": {    "type": "unauthenticated",    "code": "invalid_api_key",    "message": "This secret key is not valid."  }}

{  "error": {    "type": "permission_denied",    "code": "permission_denied",    "message": "Insufficient permissions."  }}

{  "error": {    "type": "not_found",    "code": "project_not_found",    "message": "There is no project proj_tz4a98xxat96iws9zmbrgj3a, or this credential cannot use it.",    "param": "projectId"  }}

{  "error": {    "type": "internal",    "code": "internal_error",    "message": "Something went wrong on our side. Try again, and contact support with the Request-Id header if it keeps failing."  }}