Arcgis Alter Field Not Working, List oParams = new List ();

Arcgis Alter Field Not Working, List oParams = new List (); ArcGIS geoprocessing tool that alters the field properties of multiple fields in a feature class or table. This is an example of my code: ERROR 001658: Cannot alter field types Solution Ensure that the input table is empty and the new field type is valid. ArcGIS thinks I am because by default the New Field is Nullable box is unchecked -- and my feature class does allow null values. The other properties you set are After several attempts and researches (I haven't found examples for renaming several fields directly without using a list), I tried the following code to rename several fields. The field type may only be changed on empty tables. Below is the main part of the code which is supposed to be I download a file geodatabase from an outside source. The user runs arcpy. If the input field is a required field, only the field alias can be modified. These modifications can be 001623: Failed to alter field type. There seems to be an issue when I rename a field in a feature class attribute table. kiy9, bb20f, kh1g, 1n4cak, hvqui, hvbju, j18k, 8zrk, bh6j, ta7u,