The maximum character limit in a Tab file name in Mapinfo Pro

Products affected: MapInfo Pro™
The length of the name of a MapInfo Tab file is not limited but is truncated to 30 characters when displayed in the Pro Explorer pane.  Users can create a longer tab file name and Pro will use it, but it will be truncated to 30 characters in Layer control, Table List, dialogs, etc.

The full file name is is shown when hovering over the map layer name in the Explorer tab.

User-added image

Internally MapInfo Pro uses a fixed character limit for all table "aliases". This is the name that is used to identify a table and it must be unique in any MapInfo Pro session. 

A feature request has already been filed to increase this maximum character length in future releases of MapInfo Pro.

UPDATED:  December 4, 2019