> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://docs.clientexec.com/sitemap.xml
> Use this file to discover available pages before exploring further.
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# The Invoice Reminder service is sending overdue notices for paid invoices!

The most common cause of this problem is that you have recently moved your ClientExec installation to another server or directory and have forgotten to disable the old installation.  The invoice that is now marked as paid in your new installation is still marked unpaid in your old installation which is why notifications are being sent. **Please disable the services running on the old installation to prevent this from occurring.**