During the design of the questionnaire, the ISCO Classifications (7095 rows) is used in 5 different fields of the questionnaire. We also use the NACE Classifications (625 rows) in 5 different fields of the questionnaire. During the compilation process, the program displays the following message.
How you attach the ISCO and NACE classifications: as user-provided options or as reusable categories? If the former, does using the latter reduce the questionnaire size?
Do you have other things attached to the questionnaire that might explain its size (e.g., images, videos, or other similar attachments)? I’m a little surprised that answer options alone would inflate the questionnaire size so much.
Maximum size of the questionnaire (not including attachments)
As the limit says the attachments are not included towards this limit (as a single video can easily be over this limit), but your classifications are an obvious suspect. Use reusable categories, put the question into a roster to make it a single use of classification, or reduce the text.