Have you read EN 10204 to see if that answers your question?
If I remember correctly, a 3.1 certification is one that is issued by the processor that identifies the lot or lots and the results of the specific tests that qualifies the lot or lots to meet the specification. I don't think section 3.1 really says any more that that.
So, it really is a matter of interpretation. In the specific case of ASTM standards, the revision year (or year of last adoption) of the standard is part of the designation. ASTM adopted this system decades ago to make it possible for QC inspectors to be able to verify this, specifically. So, in a technical sense, it is required to identify the standard the products are being certified to. But, many processors, who can't be bothered to continuously update their certifications or have to re-produce certifications on product that was process two years ago, but sold this year, when the standard had been re-adopted, will just state the the revision of the standard that was in effect on the date of the order is what applies.
If you are a big consumer of product from a particular processor, and you want them to issue certifications with a specific year of adoption on it, you might be able to get them to accommodate you. If you are buying product from a guy in a truck, good luck in getting anyone to talk to.
If you are somewhere in-between and you raise a big enough stink, you might get someone to do something, but it might just be someone hand-writing the date by the designation on the certification. There isn't any reason that would not be valid, assuming it was true. If it wasn't true, it really wouldn't matter if the date was hand-written or if it was embossed with gold-leaf highlights.
Now, if you had a situation where the specific ASTM standard was one where complying with the 2009 version would not be acceptable for your application, but the 2013 version had been revised so that the material would be acceptable, you had better be specific on your purchasing documents that you need certification to the 2013 edition of the standard. If not, your receiving guys should stop it until someone can say whether or not the material is acceptable or not. In either case, the issue really is not what the paper says, but what the material is.
rp