I was trying to copy the data from one list (MOSS 2007 site collection) to another existing list in (Sharepoint 2010 site collection)but getting an error : "create pending type Absences in list library Absences.Cannot complete this action please try again. 0X80004005". Please help to resolve this issue.
These can be the causes of error 0x80004005
Take a look at this solution: https://errorcodespro.com/fix-error-code-0x80004005-windows-7-10/