Make Aggregation Query Layer — Use text column as unique ID

[Bud]

ArcGIS Pro 3.3.0; Oracle 18c Database:

I want to use a FC as the Target Feature Class in the Make Aggregation Query Layer tool. The FC has a text field that is a unique identifier.

The tool is giving me an error:

Error 000358 No fields can be mapped to unique identifier.

If I add a Long Integer field to the FC, then that field can be used as the unique ID. I wouldn't get the error. 

But that's not how my data is structured. My ID field is text, not integers. Could the tool be enhanced so that a text field can be used as the unique ID?