PLINK v1.90b7 64-bit (16 Jan 2023)             www.cog-genomics.org/plink/1.9/
(C) 2005-2023 Shaun Purcell, Christopher Chang   GNU General Public License v3
Logging to data_TL_4_KD.log.
Options in effect:
  --bfile twas_snp_chr1
  --make-bed
  --merge-list TL_allfiles13chromosomes_imputedgenes.txt
  --out data_TL_4_KD

515522 MB RAM detected; reserving 257761 MB for main workspace.
Warning: First fileset to be merged contains duplicate variant ID(s).  Variants
with matching IDs are all merged together; if this is not what you want (e.g.
you have a bunch of novel variants, all with ID "."), assign distinct IDs to
them (with e.g. --set-missing-var-ids) before rerunning this merge.
Error: 1 variant with 3+ alleles present.
* If you believe this is due to strand inconsistency, try --flip with
  data_TL_4_KD-merge.missnp.
  (Warning: if this seems to work, strand errors involving SNPs with A/T or C/G
  alleles probably remain in your data.  If LD between nearby SNPs is high,
  --flip-scan should detect them.)
* If you are dealing with genuine multiallelic variants, we recommend exporting
  that subset of the data to VCF (via e.g. '--recode vcf'), merging with
  another tool/script, and then importing the result; PLINK is not yet suited
  to handling them.
See https://www.cog-genomics.org/plink/1.9/data#merge3 for more discussion.