From MobileX for Sage CRM Help
Summary/New and Edit screens
To add/remove fields from your CRM system you need to edit the screens in CRM called
You can customized the list with this setting (comma delimit the fields)
<add key="lead_descfield" value="lead_description,lead_companyname"/>
- the field 'lead_companymatch' is not supported in this screen and you cannot match a company to a lead from MobileX. You must do this in full CRM.