The chart data fields for patient identifiers must be configured to use assigning authorities in order for overlapping values to be used. Only assign an assigning authority Keyword Type to these fields if your system should allow the same identifier to be used for different records.
The chart data fields MPI Number(ID #1), Medical Record #(ID #7), and Chart ID #(ID #10) can have assigning authorities specified and validated.
To configure assigning authorities for chart data fields: