> 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/warehouse-transfers/904-serial-number-validation.md).

# 904 - Serial Number Validation

Syslog 4.0 - Extensibility - Functions Syslog - Kalipso - Warehouse Transfers - 904 - Serial Number Validation

904 - (Warehouse Transfers) Serial Number Validation

| **Event**           | **Extension action set** | **Description**                                                   |
| ------------------- | ------------------------ | ----------------------------------------------------------------- |
| [Before ](#before)  | EXT\_0904\_1\_Before     | Will be executed before barcode validation;                       |
| [Replace](#replace) | EXT\_0904\_2\_Replace    | This event is executed to replace validation of the serial number |
| [After](#after)     | EXT\_0904\_3\_After      | Will be executed after serial number validation;                  |

### Before

*Input Parameters*

* inRef - Item Code; 
* inSerialNumber - Serial number 

*Output Parameters*

* outContinue - Return code<br>

### Replace

*Input Parameters*

* inRef – Item Code;&#x20;
* inSerialNumber - Serial number

*Output Parameters*

* outContinue - Return code
* outSerialNumber - Serial number<br>

### After

*Input Parameters*

* inRef - Item Code
* inSerialNumber - Serial number