These documents, where created, supersede PKCS#11 v2.40. That is, if there is an updated constant identifier in the Errata, that should be considered correct. The PKCS#11 2.40 Usage Guide remains the most up to date, and it is a committee note (not a standard).
In addition to the updated errata documents, we are excited to launch our first official set of header files since moving under the OASIS banner (aka "normative computer language definition files"): pkcs11.h, pkcs11f.h, and pkcs11t.h.
The PKCS11 TC has published Approved Errata for PKCS #11 V2.40. See the announcement at https://www.oasis-open.org/news/announcements/pkcs-11-v2-40-approved-erratas-published-by-pkcs-11-tc or use the links below.
- PKCS #11 Cryptographic Token Interface Base Specification Version 2.40 Errata 01
http://docs.oasis-open.org/pkcs11/pkcs11-base/v2.40/errata01/os/pkcs11-base-v2.40-errata01-os.html - PKCS #11 Cryptographic Token Interface Base Specification Version 2.40 Plus Errata 01
OASIS Standard Incorporating Approved Errata 01
http://docs.oasis-open.org/pkcs11/pkcs11-base/v2.40/errata01/os/pkcs11-base-v2.40-errata01-os-complete.html - Normative computer language definition files
http://docs.oasis-open.org/pkcs11/pkcs11-base/v2.40/errata01/os/include/pkcs11-v2.40/
- PKCS #11 Cryptographic Token Interface Current Mechanisms Specification Version 2.40 Errata 01
http://docs.oasis-open.org/pkcs11/pkcs11-curr/v2.40/errata01/os/pkcs11-curr-v2.40-errata01-os.html - PKCS #11 Cryptographic Token Interface Current Mechanisms Specification Version 2.40 Plus Errata 01
OASIS Standard Incorporating Approved Errata 01
http://docs.oasis-open.org/pkcs11/pkcs11-curr/v2.40/errata01/os/pkcs11-curr-v2.40-errata01-os-complete.html
- PKCS #11 Cryptographic Token Interface Historical Mechanisms Specification Version 2.40 Errata 01
http://docs.oasis-open.org/pkcs11/pkcs11-hist/v2.40/errata01/os/pkcs11-hist-v2.40-errata01-os.html - PKCS #11 Cryptographic Token Interface Historical Mechanisms Specification Version 2.40 Plus Errata 01
OASIS Standard Incorporating Approved Errata 01
http://docs.oasis-open.org/pkcs11/pkcs11-hist/v2.40/errata01/os/pkcs11-hist-v2.40-errata01-os-complete.html