000016: <value> annotation(s) rejected.

Description

A number of annotation features have been rejected during the append process and have not been added to the output annotation feature class because they are outside its extent.

Solution

Either append the annotation features into a feature class created by the tool and let the tool create the extents or create a new annotation feature class with a larger extent, move the annotation features from the destination annotation feature class into it using the Copy Features tool, and append the other data into this annotation feature class.