<h1 class="title">base_vat module performance enhancements</h1> <p>This module contains the following performance improvements:</p> <ul> <li><p class="first">VIES VAT on-line check performance improvements</p> <p>The standard base_vat module behaviour is changed as follows:</p> <p>When the VIES VAT option has been set on the Company an on-line check will be performed via the TIN Number &quot;Check Validity&quot; button.</p> <p>When performing partner record updates (explicitly or implicitly e.g. by paying an invoice), a VAT number check is performed on partner and/or contact records (since the VAT number is part of the so-called &quot;_commercial_fields&quot;). Since the on-line check may slow down considerably the regular operations, the constraint has been removed and replaced by an on-line check when creating partner records and a basic off-line check when updating partner records.</p> </li> <li><p class="first">normalize res.partner vat field in the database to improve search performance</p> </li> <li><p class="first">normalize search argument when searching on VAT number</p> </li> </ul>