This howto will create email accounts extension package to your products

- CREATE file if don't exist "C:\Program Files (x86)\Atomia\AutomationServer\Common\ProvisioningDescriptions\Transformation Files\ProvisioningDescription.SomePackageExtensions.xml"

- ADD text   

<?xml version="1.0" encoding="UTF-8"?>
<provisioningDescription xmlns:xdt="http://schemas.microsoft.com/XML-Document-Transform">
  <packageDescription>
    <packageExtensionList>
      <packageExtension name="MailAddon" xdt:Transform="Insert">
        <serviceLimitationList>
          <globalLimitation>
            <group maxCount="1" name="MailAccount">
              <service name="MailAccount" />
            </group>
          </globalLimitation>
        </serviceLimitationList>
        <extendsList>
          <extends name="BasePackage" /> 
          <extends name="PremiumPackage" />
          <!-- other packages for which we want to allow extension -->
          <extends name="PackSmallBusiness" />
        </extendsList>
      </packageExtension>
    </packageExtensionList>
  </packageDescription>
</provisioningDescription> 

- CREATE file "C:\Program Files (x86)\Atomia\BillingAPIs\BillingApi\Transformation Files\Web.SomePackageExtensions.config"

<?xml version="1.0" encoding="UTF-8"?>
<configuration xmlns:xdt="http://schemas.microsoft.com/XML-Document-Transform">
<atomiaBilling xmlns="atomiaBilling" provisioningPluginName="AtomiaProvisioningHosting" parallelScheduledTasks="false" xdt:Transform="SetAttributes(parallelScheduledTasks)" xdt:Locator="Match(provisioningPluginName)">
<provisioningOrders>
<provisioningOrder provisioningService="EmailAccountAddon" order="10" xdt:Transform="Insert" />
</provisioningOrders>
</atomiaBilling>
<atomiaProvisioningConfiguration xmlns="atomiaProvisioning" adPasswordPattern="cczddApb" provisioningServiceUsername="Administrator"
provisioningServicePassword="Administrator" administratorEmail="[email protected]"
domainRenewalDateMargin="7">
<provisioningDescriptionMappings>
<provisioningDescription name="ProvisioningDescription">
<packages>
<!-- Extension package -->
<package name="EmailAccountAddon" type="PackageExtension" xdt:Transform="Insert" >
<properties>
<packageProperty key="EmailAccountAddon" />
</properties>
</package>
</packages>
</provisioningDescription>
</provisioningDescriptionMappings> 
</atomiaProvisioningConfiguration>
</configuration>

ADD EXTENSION PRODUCTS TROUGH GUI

- GOTO https://admin.yourdomain.com/ (Login as Main reseller)

- ADD New product

Provisioning service -> MailAddon <!--name of the extension-->

Product category -> Extra service

Custom attributes

"maximalproductvalue=10" <!--maximal number of units available to add in one pass-->

"minimalproductvalue=1" <!--minimal number of units available to add in one pass-->

"productvaluestep=1" 

"productvalueunit="

"packages=HST-GLDY|HST-SMA-BUS" <!--where value is the name of product which can be extended with this package (replace it with the ones you want to be able to extend)-->

"allowmultiple=true" <!-- extension package can be added just once if you don't add this attribute -->

- SAVE

- LOGOUT from admin panel

After defining product you need to add it to Subreseller shop.

- GOTO https://admin.yourdomain.com/ (Login as Subreseller)

- ADD extension product to Subreseller shop

- LOGOUT from admin panel

Recreate all config files and restart services on GUI, Automation and Billing API machine

Final Note: In order for "Extra Services" to be present in BCP the extended product (eg. Gold Package, Premium, etc.) needs to have following  custom attribute  :

Paramater / value : hasextraservices / true