An asterisk * in the title indicates the field is mandatory.
If a field has a default value, it is shown in the Description column.
If the field type is an array, the Field Name has a .[n] suffix, where n is the array index placeholder.
Object and array field names are listed to provide context. If a field belongs to an object or an array, the full field name is shown in dot separated notation.

Title		Description	Details
DistinguishedName			Field Name: DistinguishedName Type: String
WhenCreatedUTC			Field Name: WhenCreatedUTC Type: String Format: date-time
OrganizationId			Field Name: OrganizationId Type: String
ManagedFolderToUpgrade		This parameter is available only in on-premises Exchange 2016. The ManagedFolderToUpgrade parameter specifies the name of a managed folder to use as a template for a retention tag.	Field Name: ManagedFolderToUpgrade Type: String
OriginatingServer			Field Name: OriginatingServer Type: String
AdminDisplayName			Field Name: AdminDisplayName Type: String
	LocalizedComment	The LocalizedComment parameter specifies localized comments and their languages. When the user's language setting matches a language specified for this parameter, Microsoft Outlook and Outlook on the web display the corresponding localized comment. Comments are specified in the form of ISO Language Code:Comment, for example, LocalizedComment EN-US:"This is a localized comment in U.S. English".	Field Name: LocalizedComment.[n] Type: Array
JournalingEnabled			Field Name: JournalingEnabled Type: Boolean
Type		The Type parameter specifies the type of retention tag being created. Valid values include: Calendar Clutter Available in Exchange Online only. Contacts DeletedItems Drafts Inbox JunkEmail Journal Notes Outbox SentItems Tasks All RecoverableItems RssSubscriptions SyncIssues ConversationHistory Personal To create a default policy tag (DPT), specify type All. For tags of type RecoverableItems, the only valid retention action is MoveToArchive.	Field Name: Type Type: String
Description			Field Name: Description Type: String
	ObjectClass		Field Name: ObjectClass.[n] Type: Array
PSShowComputerName			Field Name: PSShowComputerName Type: Boolean
PSComputerName			Field Name: PSComputerName Type: String
RetentionId		The RetentionId parameter specifies an alternate tag ID to make sure the retention tag found on mailbox items tagged in an on-premises deployment matches the tag when the mailbox is moved to the cloud, or mailbox items tagged in the cloud match the tag when the mailbox is moved to an on-premises Exchange server. The parameter is used in cross-premises deployments. You don't need to specify this parameter in on-premises-only deployments.	Field Name: RetentionId Type: String
MustDisplayCommentEnabled		The MustDisplayCommentEnabled parameter specifies whether the comment can be hidden. The default value is $true.	Field Name: MustDisplayCommentEnabled Type: Boolean
MessageFormatForJournaling			Field Name: MessageFormatForJournaling Type: String
MessageClass		The MessageClass parameter specifies the message type to which the tag applies. If not specified, the default value is set to . With the exception of a default policy tag (DPT) for voicemail, Exchange doesn't support retention tags for different message types. Only tags with a MessageClass of are supported, and they apply to all message types. To create a DPT for voice mail messages, set the MessageClass parameter to voicemail and the Type parameter to All. A DPT for voice mail messages applies only to Microsoft Exchange Unified Messaging voice mail messages (identified by the PR_MESSAGE_CLASS MAPI property value IPM.Note.Microsoft.Voicemail*).	Field Name: MessageClass Type: String
Identity		The Identity parameter specifies the name of the tag.	Field Name: Identity Type: String
MoveToDestinationFolder			Field Name: MoveToDestinationFolder Type: String
IsDefaultAutoGroupPolicyTag		This parameter is reserved for internal Microsoft use.	Field Name: IsDefaultAutoGroupPolicyTag Type: Boolean
IsDefaultModeratedRecipientsPolicyTag		This parameter is reserved for internal Microsoft use.	Field Name: IsDefaultModeratedRecipientsPolicyTag Type: Boolean
Name *		The Name parameter specifies the name of the tag.	Field Name: Name Type: String
AgeLimitForRetention		The AgeLimitForRetention parameter specifies the age at which retention is enforced on an item. The age limit corresponds to the number of days from the date the item was delivered, or the date an item was created if it wasn't delivered. If this parameter isn't present and the RetentionEnabled parameter is set to $true, an error is returned.	Field Name: AgeLimitForRetention Type: String
WhenCreated			Field Name: WhenCreated Type: String Format: date-time
SystemTag		The SystemTag parameter specifies that the tag is created for internal Exchange functionality.	Field Name: SystemTag Type: Boolean
RetentionEnabled		The RetentionEnabled parameter specifies whether the tag is enabled. When set to $false, the tag is disabled, and no retention action is taken on messages that have the tag applied. Messages with a disabled tag are still considered tagged, so any default policy tags in the user's retention policy aren't applied to such messages. When you set the RetentionEnabled parameter to $false, the retention period for the tag is shown as Never. Users may apply this tag to items they want to indicate should never be deleted or should never be moved to the archive. Enabling the tag later may result in unintentional deletion or archiving of items. To avoid this situation, if a retention policy is disabled temporarily, it may be advisable to change the name of that tag so that users are discouraged from using it, such as DISABLED_<Original Name>.	Field Name: RetentionEnabled Type: Boolean
ExchangeVersion			Field Name: ExchangeVersion Type: String
LegacyManagedFolder		The LegacyManagedFolder parameter specifies the name of a managed folder. The retention tag is created by using retention settings from the managed folder and its managed content settings. You can use this parameter to create retention tags based on existing managed folders to migrate users from managed folder mailbox policies to retention policies.	Field Name: LegacyManagedFolder Type: String
RunspaceId			Field Name: RunspaceId Type: String
RetentionAction		The RetentionAction parameter specifies the action for the retention policy. Valid values are: DeleteAndAllowRecovery Deletes a message and allows recovery from the Recoverable Items folder. MarkAsPastRetentionLimit Messages are marked as past the retention limit. MoveToArchive Moves a message to the user's archive mailbox. You can use this action for retention tags of type All, Personal, and RecoverableItems. PermanentlyDelete Permanently deletes a message. A message that has been permanently deleted can't be recovered using the Recoverable Items folder. Permanently deleted messages aren't returned in a Discovery search, unless litigation hold is enabled for the mailbox. The MoveToDeletedItems and MoveToFolder actions are available, but don't work. These actions are available for upgrades from messaging records management (MRM) 1.0 (managed folders) to MRM 2.0 (retention policies). MRM 2.0 was introduced in Exchange 2010 Service Pack 1 (SP1). If this parameter isn't present and the RetentionEnabled parameter is set to $true, an error is returned.	Field Name: RetentionAction Type: String
Comment		The Comment parameter specifies a comment for the tag.	Field Name: Comment Type: String
DomainController		This parameter is available only in on-premises Exchange 2016. The DomainController parameter specifies the domain controller that's used by this cmdlet to read data from or write data to Active Directory. You identify the domain controller by its fully qualified domain name (FQDN). For example, dc01.contoso.com.	Field Name: DomainController Type: String
ObjectCategory			Field Name: ObjectCategory Type: String
	LocalizedRetentionPolicyTagName	The LocalizedRetentionPolicyTagName parameter specifies localized tag names and their languages. When the user's language setting matches a language specified for this parameter, Outlook and Outlook on the web display the corresponding localized tag name. Names are specified in the form of ISO Language Code:Name, for example, LocalizedRetentionPolicyTagName EN-US:"Business Critical".	Field Name: LocalizedRetentionPolicyTagName.[n] Type: Array
AddressForJournaling			Field Name: AddressForJournaling Type: String
IsValid			Field Name: IsValid Type: Boolean
WhenChanged			Field Name: WhenChanged Type: String Format: date-time
WhenChangedUTC			Field Name: WhenChangedUTC Type: String Format: date-time
LabelForJournaling			Field Name: LabelForJournaling Type: String
ObjectState			Field Name: ObjectState Type: String
MessageClassDisplayName			Field Name: MessageClassDisplayName Type: String
TriggerForRetention			Field Name: TriggerForRetention Type: String
Guid			Field Name: Guid Type: String
Id			Field Name: Id Type: String

Model: device/exchangeonline/RetentionPolicyTag

Model Details: device/exchangeonline/RetentionPolicyTag