> 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/store-in3/304-3.md).

# 304 - (Store In) Serial Number Validation (grid only)

304 - (Store In) Serial Number Validation (grid only)

| **Event** | **Extension action set** | **Description**                                                   |
| --------- | ------------------------ | ----------------------------------------------------------------- |
| Before    | EXT\_0304\_1\_Before     | Will be executed before barcode validation;                       |
| Replace   | EXT\_0304\_2\_Replace    | This event is executed to replace validation of the serial number |
| After     | EXT\_0304\_3\_After      | Will be executed after serial number validation;                  |

*Input Parameters (event before)*:

* inRef – Item Code 
* inSerialNumber – Serial number;

*Output Parameters (event before)*:

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

*Input Parameters (event replace)*:

* inRef – Item Code 
* inSerialNumber – Serial number;

*Output Parameters (event replace)*:

* outContinue – Return code:
  * 1 - Continue Validation
  * 0 – Cancel 
* outSerialNumber – Return Serial Number if the result is multi-serial numbers return serial number separated by VAR(SEP\_ACL)

*Input Parameters (event after)*:

* inRef – Item Code 
* inSerialNumber – Serial number;

*Output Parameters (event after)*:

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


---

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