Quickbooks Online API - Set docNumber default auto incrememnt

Question

I'm using Keith Palmer's QuickBooks PHP DevKit to create an invoice. The invoice numbers are being auto generated and auto increment. However, instead of starting from 1000 I was wondering if it would be possible to start from something like M1000?

How can this be done?

My HTTP request is:

<Invoice xmlns="http://schema.intuit.com/finance/v3">
    <DocNumber>RAPH9750</DocNumber>
    <TxnDate>2014-12-14</TxnDate>
    <Line xmlns="http://schema.intuit.com/finance/v3">
        <Amount>596.42</Amount>
        <DetailType>SalesItemLineDetail</DetailType>
        <Description>Cleaning of 2 Rugs.</Description>
        <SalesItemLineDetail xmlns="http://schema.intuit.com/finance/v3">
            <ItemRef>21</ItemRef>
        </SalesItemLineDetail>
    </Line>
    <Line xmlns="http://schema.intuit.com/finance/v3">
        <Amount>180</Amount>
        <DetailType>SalesItemLineDetail</DetailType>
        <Description>Padding</Description>
        <SalesItemLineDetail xmlns="http://schema.intuit.com/finance/v3">
            <ItemRef>22</ItemRef>
        </SalesItemLineDetail>
    </Line>
    <Line xmlns="http://schema.intuit.com/finance/v3">
        <Amount>11.25</Amount>
        <DetailType>SalesItemLineDetail</DetailType>
        <Description>Padding Tax</Description>
        <SalesItemLineDetail xmlns="http://schema.intuit.com/finance/v3">
            <ItemRef>23</ItemRef>
        </SalesItemLineDetail>
    </Line>
    <CustomerRef>62</CustomerRef>
</Invoice>]

Answer 1

It is getting auto generated based on the company setting of your QBO account. See the below snapshot. It is not possible to control the auto generated docNumber.