Append Data tool - input unique values when field mapping

[Anonymous User]

I would like the ability to input unique values when using the Field Map. So in addition to the option of "Add New Source" there would be an "Add Value or String" choice, where you could input a string or value that would carry over in the attribute table for all appended data. Maybe this is already possible? append append tool‌ field maps‌

[jessneuner]

We have the same need!

ideally we would be able to calculate values to a standard format on append rather than needing to follow up with field calcs for several fields.  Related to sharing data up to the county.  

[KevinMayall]

Agreed.  For example, when I am creating a new feature class and appending features to it one at a time from multiple other feature classes, I'd like to be able to specify a string that indicates the source and store it in a target field for all appended features.