Unknown page format CUSTOM

I got this error message when setting up a custom Size for the Membership Card .  The Custom Size is a  standard CR80 size that is used for Credit Card style size for ID/Membership cards 
I enclose a screen shot of the coniguration and the error message  

Project Cancelled by NGO - no need for any further help

Sorry, I missed this post and could not reply you earlier. Sad to here that the project was cancelled but I hope to see you again in the future, hopefully other Joomla ! project

Regards,

Tuan