Rev. 2 code 15.1 maps to the same Rev. 2.1 class 15.1 Tanning, dyeing, dressing of leather and fur; manufacture of luggage, handbags, saddlery and harness.
Potential impact
Low operational impact is expected, but systems should still store the target Rev. 2.1 version explicitly.
What to check next
Confirm the target version field and update references where Rev. 2.1 is required.