# SIP Header

The **SIP Header** type matches a SIP header against a regular expression.

Open **Configuration > Conditions**, select **New Condition**, enter a name, choose **SIP Header** in the Type field, complete the type-specific fields, and select **Save**.

<figure id="bkmrk-sip-header-condition">![SIP Header condition edit form in the Canistracci OIL tenant.](https://manual.mirtapbx.com/uploads/images/gallery/2026-06/pW3sip-header.png)<figcaption>SIP Header condition edit form in the Canistracci OIL tenant.</figcaption></figure>## Fields

<table id="bkmrk-field-or-optiondescr"><thead><tr><th>Field or option</th><th>Description</th></tr></thead><tbody><tr><td>Name</td><td>Display name used in condition lists and selectors.</td></tr><tr><td>Type</td><td>Select SIP Header.</td></tr><tr><td>SIP Header</td><td>Header name to inspect.</td></tr><tr><td>Regular Expression</td><td>Expression used to match the header value.</td></tr></tbody></table>

## Example

<table id="bkmrk-fieldexample-value-n"><thead><tr><th>Field</th><th>Example value</th></tr></thead><tbody><tr><td>Name</td><td>Docs Condition - SIP Header</td></tr><tr><td>SIP Header</td><td>X-Account</td></tr><tr><td>Regular Expression</td><td>Accounting</td></tr></tbody></table>

## Destinations

For tenant conditions, select the destinations that should run when the condition matches and when it does not match. Global conditions are referenced by tenant-level Use a Global Condition records.

## Editing and deleting

To edit this condition, open **Docs Condition - SIP Header** from the Conditions list, adjust the fields, and select **Save**. Before deleting it, check IVRs, schedules, routes, feature codes, and other call-flow objects that may reference it.