I have been facing few problems in using ArcGIS 10.8 version. My problem with joining table. When I tried to join a field from a table namely "geocode" but didn't save it and found blank values, so, I tried to correct the excel workbook and tried to connect again using the join in ArcGIS. But, it doesn't show the geocode joining again. It takes other field/column to join but no more geocode. Why is this? And how to solve this problem?

