Arc 10.7.1 - Geoprocessing: Union fails if an underscore is used in an output field. ANYONE ELSE EXPERIENCE THIS ISSUE? IF YES, IS THERE A PATCH AVAILABLE?

[AndrewTrcka]

Geoprocessing: Union fails if an underscore is used in an output field.

[DanPatterson_Retired]

can you screen grab your inputs? or provide them in some way