This InDesign design-time message means that your script is using the use main grid bleed and slug diary generation option but that the corresponding use main grid as seed for generation is turned off.
If you ignore this message, then the generated output file will use 0 for all 8 of its bleed and slugs document values.
Solution
Select the Change Diary Generation Options from the suggested solutions pop-up menu, and either turn on the use main grid as seed for generation option, or turn off the use main grid bleed and slug diary generation option and specify the bleed and slug values yourself.
Topic 185710, last updated on 13-Jul-2021