Yes, it can be modified. However, whether it can be modified and how to modify it depends on the specific content of the error you submitted and the situation at the time.

If you are submitting application materials that have already been submitted, you may not be able to change or delete the erroneous declaration information. In this case, you need to contact the relevant agency or resubmit the complete application materials.

If you are submitting application materials that have not yet been submitted, you can correct or delete the erroneous declaration information. However, please make sure that your correction or deletion will not affect the eligibility requirements of other applicants for the same project. If your correction or deletion involves the integrity of application materials already submitted by other applicants, you may need to resubmit the complete application materials.