b4f569c4_ips__Converting_to_Access_2007__Bug
[Comments] A subform in Datasheet view can have a subform (in A2007 only.) But when you delete from the sub-subform and then move record in the main form, it errors: Operation not supported in transactions. [Fixed?] Yes: SP2 [Bug] 
Sub-subform: error on delete
Microsoft Access tips: Converting to Access 2007
Bug