# tBufferOutput Collects data in a buffer in order to access it later via webservice for example. tBufferOutput has been designed to be exported as Webservice in order to access data on the web application server directly. For more information, see [Creating a Welcome Action Process](https://help.qlik.com/talend/r/en-US/8.0/studio-user-guide/creating-welcome-action-process). ## tBufferOutput Standard properties These properties are used to configure tBufferOutput running in the Standard Job framework. The Standard tBufferOutput component belongs to the Misc family. The component in this framework is available in all Talend products. ## Basic settings | Properties | Description | | --- | --- | | Schema and Edit Schema |

A schema is a row description, it defines the number of fields that will be processed and passed on to the next component. The schema is either built-in or remote in the Repository.
Click Edit schema to make changes to the schema. If the current schema is of the Repository type, three options are available:
- View schema: choose this option to view the schema only.
- Change to built-in property: choose this option to change the schema to Built-in for local changes.
- Update repository connection: choose this option to change the schema stored in the repository and decide whether to propagate the changes to all the Jobs upon completion.
  
  If you just want to propagate the changes to the current Job, you can select No upon completion and choose this schema metadata again in the Repository Content window.
In the case of the tBufferOutput, the column position is more important than the column label as this will be taken into account.
Built-in: The schema will be created and stored locally for this component only. For more information about a component schema in its Basic settings tab, see Basic settings tab.
Repository: The schema already exists and is stored in the Repository, hence can be reused in various projects and Job designs. For more information about a component schema in its Basic settings tab, see Basic settings tab.

| ## Advanced settings | Properties | Description | | --- | --- | | Use Base64 (for byte[]) | This option is selected by default and makes sure the Base64 encoding scheme
is used to transfer byte arrays. | | tStatCatcher Statistics | Select this check box to collect log data at the component level. | ## Global Variables | Variables | Description | | --- | --- | | Global Variables | ERROR\_MESSAGE: the error message generated by the
component when an error occurs. This is an After variable and it returns a string. This
variable functions only if the Die on error checkbox is
cleared, if the component has this checkbox.

A Flow variable functions during the execution of a component
while an After variable functions after the execution of the component.

To fill up a field or expression with a variable, press Ctrl+Space to access the variable list and choose the variable to use from
it.

For more information about variables, see [Using contexts and variables](https://help.qlik.com/talend/r/en-US/8.0/studio-user-guide/contexts-and-variables). | ## Usage | Usage guidance | Description | | --- | --- | | **Usage rule** | This component is not startable (green background) and it requires an output
component. | **Related concepts** * [Buffering data](https://help.qlik.com/talend/en-US/components/8.0/buffer/tbufferoutput-trunjob-tfileinputdelimited-tlogrow-buffering-data-standard-component-this) * [Retrieving bufferized data](https://help.qlik.com/talend/en-US/components/8.0/buffer/tbufferinput-tbufferoutput-tfileinputdelimited-tlogrow-retrieving-bufferized-data-standard-component-this) * [Returning a value from a child Job to the parent Job](https://help.qlik.com/talend/en-US/components/8.0/buffer/component-tbufferoutput-return-value-from-child-to-parent "You may need to return a value or rows from a child Job to the parent Job for further use. This scenario shows the best practice of how to pass a value with a tBufferOutput component from a child Job to the parent Job.")