set_the_default_value_for_member_register_using_pre_processing.txt

{* Get member field config *}
{api_method
    var='member_form_config'
    model='MemberForm'
    method='details'
    version='1'}
{* Compare the member field and requested items *}
{foreach from=$member_form_config.details key=key item=item}
    {* If no numeric items in the request, add it with default value *}
    {if $item.ext_column_flg && $item.type eq "number" && !isset($body.$key)}
        {append var=request index=$key value=0}
    {/if}
{/foreach}