# 3700 - (Login) Login validation

3700 - (Login) Login validation

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

*Input Parameters (event before):*

* inUserName – User login name;

*Input Parameters* *(event replace):*

* inUserName – User login name;

*Output Parameters (event replace):*

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

*Input Parameters (event after):*

* inUserName – User login name;