Hi,
Thank you for using FUMA.
FUMA requires either chr and position columns or rsID to recognise SNPs.
What happened in your case is that FUMA thinks column SNP as the rsID and since you don't have column for position, FUMA had to extract position based on rsID which is not really the rsID.
So what you have to do is to either add another column of position or remove chromosome part from SNP column.
"SNP" column is recognised as rsID by default so you have to either change the column name or provide the column name when you submit the job.
This should solve the ERROR 001.
Best,
Kyoko