> For the complete documentation index, see [llms.txt](https://doc.sysdevmobile.com/mss-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/mss-extensibility/mss-5.1/functions-mss-to-kalipso/login/3700-login-login-validation.md).

# 3700 - Login validation

3700 - Login validation

| Event               | Extension action set  | Description                                                                                                            |
| ------------------- | --------------------- | ---------------------------------------------------------------------------------------------------------------------- |
| [Before ](#before)  | EXT\_3700\_1\_Before  | Will be executed before MSS validates the user credentials and permissions;                                            |
| [Replace](#replace) | EXT\_3700\_2\_Replace | Will be executed before MSS validates the user credentials and permissions with the possibility to cancel the process; |
| [After](#after)     | EXT\_3700\_3\_After   | Will be executed after MSS validates the user credentials and permissions;                                             |

### Before

*Input Parameters*

* inUserName – User login name;

### Replace

*Input Parameters*

* inUserName – User login name;

*Output Parameters*

* outCanLogin – Return code: 1 – Continue the process / 0 – Cancel;

### After

*Input Parameters*

* inUserName – User login name;