| Exception | Description | 
|---|---|
| AmazonWorkDocsException | Base exception for all service exceptions thrown by Amazon WorkDocs | 
| ConcurrentModificationException | 
 The resource hierarchy is changing. | 
| ConflictingOperationException | 
 Another operation is in progress on the resource that conflicts with the current operation. | 
| CustomMetadataLimitExceededException | 
 The limit has been reached on the number of custom properties for the specified resource. | 
| DeactivatingLastSystemUserException | 
 The last user in the organization is being deactivated. | 
| DocumentLockedForCommentsException | 
 This exception is thrown when the document is locked for comments and user tries to create or delete a comment on
 that document. | 
| DraftUploadOutOfSyncException | 
 This exception is thrown when a valid checkout ID is not presented on document version upload calls for a document
 that has been checked out from Web client. | 
| EntityAlreadyExistsException | 
 The resource already exists. | 
| EntityNotExistsException | 
 The resource does not exist. | 
| FailedDependencyException | 
 The Directory Service cannot reach an on-premises instance. | 
| IllegalUserStateException | 
 The user is undergoing transfer of ownership. | 
| InvalidArgumentException | 
 The pagination marker or limit fields are not valid. | 
| InvalidCommentOperationException | 
 The requested operation is not allowed on the specified comment object. | 
| InvalidOperationException | 
 The operation is invalid. | 
| InvalidPasswordException | 
 The password is invalid. | 
| LimitExceededException | 
 The maximum of 100,000 files and folders under the parent folder has been exceeded. | 
| ProhibitedStateException | 
 The specified document version is not in the INITIALIZED state. | 
| RequestedEntityTooLargeException | 
 The response is too large to return. | 
| ResourceAlreadyCheckedOutException | 
 The resource is already checked out. | 
| ServiceUnavailableException | 
 One or more of the dependencies is unavailable. | 
| StorageLimitExceededException | 
 The storage limit has been exceeded. | 
| StorageLimitWillExceedException | 
 The storage limit will be exceeded. | 
| TooManyLabelsException | 
 The limit has been reached on the number of labels for the specified resource. | 
| TooManySubscriptionsException | 
 You've reached the limit on the number of subscriptions for the WorkDocs instance. | 
| UnauthorizedOperationException | 
 The operation is not permitted. | 
| UnauthorizedResourceAccessException | 
 The caller does not have access to perform the action on the resource. |