# 2400 - (Services) Services Module

2400 - (Services) Services Module

| Event   | Extension action set  | Description                                            |
| ------- | --------------------- | ------------------------------------------------------ |
| Before  | EXT\_2400\_1\_Before  | Will be executed before MSS opens the Services module; |
| Replace | EXT\_2400\_2\_Replace | Will replace MSS Services module;                      |
| After   | EXT\_2400\_3\_After   | Will be executed after closing the Services module;    |

*Output Parameters (event replace):*

* outOpenMSSModule – Return code: 1 – Open MSS module / 0 – Don’t open MSS module;