tommyo Posted October 6, 2021 Share Posted October 6, 2021 Reading the link below, there is a hidden field called Next Invoice Date. Is there a way to edit this field for services? We are trying to invoice for something a month ahead of it's Next Due Date. Any help is appreciated! https://docs.whmcs.com/Billing_Logic 0 Quote Link to comment Share on other sites More sharing options...
pRieStaKos Posted October 7, 2021 Share Posted October 7, 2021 https://developers.whmcs.com/api-reference/updateclientproduct/ 0 Quote Link to comment Share on other sites More sharing options...
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