I have had the same issue too.
I think Helen means that the specified file (SRA_Accessions.tab) which is useful for finding SRR accession codes for GEO accession codes doesn't seem to contain any ERR codes, and the DRR codes it does contain don't seem to have proper GEO codes. Hence if I have a list of GEO accession codes and I write a script to get their corresponding SRA codes, I would only find the ones that correspond to SRR codes and not to ERR or DRR.
You asked that already: What is the difference between SRR, DRR, ERR ?
Please do not double post.