> For the complete documentation index, see [llms.txt](https://doc.sysdevmobile.com/syslog-extensibility/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.sysdevmobile.com/syslog-extensibility/functions-syslog-kalipso-1/inventory3/502-3.md).

# 502 - (Inventory) Barcode Validation

Syslog 3.0 - Extensibility - Functions Syslog - Kalipso - Inventory - 502 - (Inventory) Barcode Validation

502 - (Inventory) Barcode Validation

| **Event** | **Extension action set** | **Description**                                 |
| --------- | ------------------------ | ----------------------------------------------- |
| Before    | EXT\_0502\_1\_Before     | Will be executed before barcode validation;     |
| Replace   | EXT\_0502\_2\_Replace    | Will be executed to replace barcode validation; |
| After     | EXT\_0502\_3\_After      | Will be executed after barcode validation;      |

*Input Parameters (event before)*:

* inFilterCabDoc – Unique key of the document; 
* inBarcode – Barcode;

*Output Parameters (event before)*:

* outCanSave – Return code:
  * 1 - Continue Validation
  * 0 – Cancel

*Input Parameters (event replace)*:

* inFilterCabDoc – Unique key of the document; 
* inBarcode – Barcode; 
* DefaultWarehouse – Selected warehouse
* inModoAuto – Read mode: 1 – Auto / 0 - Manual

*Output Parameters (event replace)*:

* outCanSave – Return code: 
  * 0- Cancel 
  * 1 - Done - Barcode inserted into the database, refresh list of articles to pick 
  * 2 - Continue - Normal behavior
* outMessage – Message to display 

*Input Parameters (event after)*:

* inFilterCabDoc – Unique key of the document; 
* inBarcode – Barcode;

*Output Parameters (event after)*:

* outCanSave – Return code: 
  * 0 - Cancel 
  * 1 - Continue