The complete error message is:
Status: Terminated due to limits in COLUMNS Inspect listing file for more information
and the listing file says:
**** Maximum number of columns in table exceeded (MAXTABCOL=2048) **** TERMINATED DUE TO LIMITS IN COLUMNS **** CONTACT YOUR GAMS ADMINISTRATOR
This error message indicates that you are trying to import a (ASCII) table with a large number of columns to GAMS. Starting with distribution 22.8 this limit has been raised to 10.000 columns in a table (and a total of 40.000 characters per line). Older versions can only handle a maximum of 2048 columns per table and line.