Problem: Fields of type single can be mapped to Double on Copy to an ArcSDE Geodatabase
On Copy to an ArcSDE Geodatabase, fields with type single can be mapped to double in the target feature class. This can cause problems if the fields are geometric network weight fields.
Solution or Workaround
Only single values should be added to the field.
If a single weight was associated with the field, typing a large value of type double into the field yields the following error:
"Error in updating an attribute.
Invalid value for given weight type"