010856: All output features belong to multiple stream links. As a result, the output feature class attribute table does not include the StreamLink field.
Description
The StreamLink field could not be determined, and it was not added as a field in the output feature class attribute table. This is because the output features correspond to multiple stream segments, not individual segments. A unique ID, which is used to populate the StreamLink field in the output feature class attribute table, can only be assigned to stream segments.
Solution
Do one of the following:
Keep the Group By Field parameter set to its default value, which is NONE.
Ensure that the values in the field selected for the Group By Field parameter value are unique for each stream segment.