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# lr.start_transaction

Marks the beginning of a transaction.

## JavaScript

    function lr.start_transaction(  transaction_name  )

## VBScript

    Function lr.start_transaction(  transaction_name  )

Example: Transaction Duration, set_transaction, and waste time | Transaction Functions

## Arguments

Name | Comments
--- | ---
transaction_name | The name of the transaction.

The lr.start_transaction function marks the beginning of a transaction. To indicate a transaction to be analyzed, use the lr.start_transaction and lr.end_transaction functions. These functions are inserted immediately before and after the transaction.

Transactions can be nested, but each lr.start_transaction statement must be associated with an lr.end_transaction statement or it will be interpreted as an illegal command.

Note: For information on allowed characters and maximum length for transaction names, see Transaction guidelines in the Virtual User Generator Help Center.

## Return Values

On success, returns 0. Returns -1 if the transaction name is illegal.

## Parameterization

Standard parameterization is not available for this function.

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