> 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/services/2400-services-services-module.md).

# 2400 - Services Module

2400 - Services Module

<table data-header-hidden><thead><tr><th width="152.33333333333331">Event</th><th width="230">Extension action set</th><th>Description</th></tr></thead><tbody><tr><td>Event</td><td>Extension action set</td><td>Description</td></tr><tr><td>Before </td><td>EXT_2400_1_Before</td><td>Will be executed before MSS opens the Services module;</td></tr><tr><td><a href="#replace">Replace</a></td><td>EXT_2400_2_Replace</td><td>Will replace MSS Services module;</td></tr><tr><td>After</td><td>EXT_2400_3_After</td><td>Will be executed after closing the Services module;</td></tr></tbody></table>

### Replace

*Output Parameters*

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