Business object UserDefDoc not found error in 5.3

Powerm

An other error since I have installed version 5.3, appears when I try to create a new entry in my BO Expected Payments :

"Internal error. Internal error. Business object UserDefDoc not found in business space version"

I have never had to use the BO UserDefDoc nor created it my BSV.Anyone else ?

Powerm

Fixed the error, one of my template document in notification email has not been imported during new bsv import . Had just to copy/paste the missing template from previous bsv.