The source table is too big and cannot be added to the Knowledge Base
Limitations for spreadsheet ranges
Max rows in the table: 1024
Max columns: 100
Limitations for .csv files
Max rows in the table: 10024
Max columns: 100
If you have reached the range limit of your table, you can still export it and upload it as a .csv file. This way, you can overcome the range limit and continue working with your data.