# CancelTransaction


Attempts to cancel the specified transaction. Returns an exception if the transaction was previously committed.

## Request Syntax


```
POST /CancelTransaction HTTP/1.1
Content-type: application/json

{
   "TransactionId": "string"
}
```

## URI Request Parameters


The request does not use any URI parameters.

## Request Body


The request accepts the following data in JSON format.

 ** [TransactionId](#API_CancelTransaction_RequestSyntax) **   <a name="lakeformation-CancelTransaction-request-TransactionId"></a>
The transaction to cancel.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 255.  
Pattern: `[\p{L}\p{N}\p{P}]*`   
Required: Yes

## Response Syntax


```
HTTP/1.1 200
```

## Response Elements


If the action is successful, the service sends back an HTTP 200 response with an empty HTTP body.

## Errors


For information about the errors that are common to all actions, see [Common Error Types](CommonErrors.md).

 ** ConcurrentModificationException **   
Two processes are trying to modify a resource simultaneously.    
 ** Message **   
A message describing the problem.
HTTP Status Code: 400

 ** EntityNotFoundException **   
A specified entity does not exist.    
 ** Message **   
A message describing the problem.
HTTP Status Code: 400

 ** InternalServiceException **   
An internal service error occurred.    
 ** Message **   
A message describing the problem.
HTTP Status Code: 500

 ** InvalidInputException **   
The input provided was not valid.    
 ** Message **   
A message describing the problem.
HTTP Status Code: 400

 ** OperationTimeoutException **   
The operation timed out.    
 ** Message **   
A message describing the problem.
HTTP Status Code: 400

 ** TransactionCommitInProgressException **   
Contains details about an error related to a transaction commit that was in progress.    
 ** Message **   
A message describing the error.
HTTP Status Code: 400

 ** TransactionCommittedException **   
Contains details about an error where the specified transaction has already been committed and cannot be used for `UpdateTableObjects`.    
 ** Message **   
A message describing the error.
HTTP Status Code: 400

## See Also


For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS Command Line Interface V2](https://docs.aws.amazon.com/goto/cli2/lakeformation-2017-03-31/CancelTransaction) 
+  [AWS SDK for .NET V4](https://docs.aws.amazon.com/goto/DotNetSDKV4/lakeformation-2017-03-31/CancelTransaction) 
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/lakeformation-2017-03-31/CancelTransaction) 
+  [AWS SDK for Go v2](https://docs.aws.amazon.com/goto/SdkForGoV2/lakeformation-2017-03-31/CancelTransaction) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/lakeformation-2017-03-31/CancelTransaction) 
+  [AWS SDK for JavaScript V3](https://docs.aws.amazon.com/goto/SdkForJavaScriptV3/lakeformation-2017-03-31/CancelTransaction) 
+  [AWS SDK for Kotlin](https://docs.aws.amazon.com/goto/SdkForKotlin/lakeformation-2017-03-31/CancelTransaction) 
+  [AWS SDK for PHP V3](https://docs.aws.amazon.com/goto/SdkForPHPV3/lakeformation-2017-03-31/CancelTransaction) 
+  [AWS SDK for Python](https://docs.aws.amazon.com/goto/boto3/lakeformation-2017-03-31/CancelTransaction) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/lakeformation-2017-03-31/CancelTransaction)