https://community.squareup.com/t5/Archived-Discussions-Read-Only/invoicing-error-message/m-p/7879#M69161 <P>What does it mean to get the error message:"This ID has already been used. Please enter a different ID."</P><P>I am creating invoices and they are all different, to different customers and with different subjects, etc. It won't let me send the invoice when I get this message but it doesn't highlight what is incorrect</P><P>&nbsp;</P><P>Help please</P> Wed, 22 Jun 2016 13:05:29 GMT jrotty 2016-06-22T13:05:29Z https://community.squareup.com/t5/Archived-Discussions-Read-Only/invoicing-error-message/m-p/7879#M69161 <P>What does it mean to get the error message:"This ID has already been used. Please enter a different ID."</P><P>I am creating invoices and they are all different, to different customers and with different subjects, etc. It won't let me send the invoice when I get this message but it doesn't highlight what is incorrect</P><P>&nbsp;</P><P>Help please</P> Wed, 22 Jun 2016 13:05:29 GMT https://community.squareup.com/t5/Archived-Discussions-Read-Only/invoicing-error-message/m-p/7879#M69161 jrotty 2016-06-22T13:05:29Z https://community.squareup.com/t5/Archived-Discussions-Read-Only/invoicing-error-message/m-p/7899#M69162 <P>It sounds like you might have accidentally entered in the same Invoice ID number, located in the "Details" section of the Invoice Template under the "Title" box.&nbsp;</P> <P>&nbsp;</P> <P><IMG src="http://lithium-prod.s3.amazonaws.com/square.response.lithium.com/RESPONSEIMAGE/8fc4ce10-388e-11e6-b1d8-06b0fc89287d.default.png" style="height:136px; width:256px" /></P> Wed, 22 Jun 2016 15:33:14 GMT https://community.squareup.com/t5/Archived-Discussions-Read-Only/invoicing-error-message/m-p/7899#M69162 EJ_ 2016-06-22T15:33:14Z