Determining paired end sequences

Hi all, is it possible to tell which paired end barcodes were used on a sample in the fastq file?

For example, will it effect the analysis if you list the paired end barcodes wrong in the metadata or get one or two of them mixed up?

Best wishes

Hi everyone, is it possible to tell which paired end barcodes were used on a sample in the fastq file?
Can you look at a fastq and know what barcodes are attached or does it not matter?

For example, will it effect the analysis if you list the paired end barcodes wrong in the metadata or get one or two of them mixed up?

Best wishes