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I'm getting an error "ERROR: Option 'RGID' cannot be specified more than once."
The command I use is:
picard -jar /path/to/picard.jar AddOrReplaceReadGroups I=/path/to/bam.bam O=/path/to/bam_rgs.bam RGID=0 RGLB=lib1 RGPL=illumina RGPU=unit1 RGSM=sample
If I remove RGID from the command, the error message says that RGID must be specified.
I'm using the Picard v. 2.12.1. I got the same error with v.2.9.2.