I want to submit .sqn file to NCBI but we have a good number of errors "ERROR: SEQ_FEAT.CollidingLocusTags". The guide says "Two gene features should not have the same locus_tag, which is supposed to be a unique identifer." Can you please suggest a solution to it?

PS: I have created this .sqn file from GFF3 file using tbl2asn (which takes .tbl file as input, previously generated using python script)