There is no 2012 edition, there was an errata 3 which is included in the errata 5 posted above

Date of Issue: September 2012
Affected Publication: API Recommended Practice 1102, Steel Pipelines Crossing Railroads and Highways, Seventh Edition, December 2007
ERRATA 3
(includes Errata 1, November 2008 and Errata 2, May 2010)
This errata corrects editorial errors in the seventh edition of API Recommended Practice 1102.
Section 2.3.12, the defined term should read:
pipe jacking with auger boring
Figure 16, the vertical axis should read:
Highway stiffness factor for cyclic longitudinal stress, KLh
Section B.2.1, the eleventh item in Step A should read:
Wall thickness, tw