Installations provides a unique identifier for each app instance and a mechanism to authenticate and authorize actions (for example, sending an FCM message).
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2021-06-17 UTC."],[],[],null,["# Firebase.Installations Namespace\n\nFirebase.Installations\n======================\n\nSummary\n-------\n\n| ### Enumerations ||\n|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------|\n| [Error](#namespace_firebase_1_1_installations_1a47b9cbcbe1bfe4e1d81a3b97d6fa5960)`{` ` `[Unknown](#namespace_firebase_1_1_installations_1a47b9cbcbe1bfe4e1d81a3b97d6fa5960a88183b946cc5f0e8c96b2e66e1c74a7e)`,` ` `[NoAccess](#namespace_firebase_1_1_installations_1a47b9cbcbe1bfe4e1d81a3b97d6fa5960a88a12f09800c497f30b98781952b50f2)`,` ` `[InvalidConfiguration](#namespace_firebase_1_1_installations_1a47b9cbcbe1bfe4e1d81a3b97d6fa5960af237deac1e85c65673a7bba9093bca7e) `}` | enum [Installations](/docs/reference/unity/namespace/firebase/installations#namespace_firebase_1_1_installations) error codes. |\n\n| ### Classes ||\n|---------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| [Firebase.Installations.FirebaseInstallations](/docs/reference/unity/class/firebase/installations/firebase-installations) | [Installations](/docs/reference/unity/namespace/firebase/installations#namespace_firebase_1_1_installations) provides a unique identifier for each app instance and a mechanism to authenticate and authorize actions (for example, sending an FCM message). |\n\nEnumerations\n------------\n\n### Error\n\n```c#\n Error\n``` \n[Installations](/docs/reference/unity/namespace/firebase/installations#namespace_firebase_1_1_installations) error codes.\n\n| Properties ||\n|------------------------|------------------------------------------------------------------------------------------------------------------------------------------|\n| `InvalidConfiguration` | Some of the parameters of the request were invalid. |\n| `NoAccess` | [Installations](/docs/reference/unity/namespace/firebase/installations#namespace_firebase_1_1_installations) service cannot be accessed. |\n| `Unknown` | An unknown error occurred. |"]]
