I reported this graffiti over a month ago, and today sent in a 30daytimeis up message. SF311 replied
It is too hard to provide SF311 with the SR. Sometimes, I can look them up, it takes time. And it would seems that the SF311 would have better access to look up the Service Request.
Alternate idea is when SF311 sends a tweet back about a service request, that it also include the address in the same tweet. Then a search by either the address or the SR would give one immediate answer.