Issue: In some cases it might be really hard or even impossible to implement some of the mandatory DRMAA attributes. For different DRMS this could vary. We therefore suggest adding a new error code to the specification: DRMAA_ERRNO_ATTRIBUTE_NOT_IMPLEMENTED. This value could be returned by drmaa_set_attribute() and drmaa_set_vector_attribute(). Furthermore, in case of future development of DRMAA, it might be desired to introduce optional routines and therefore DRMAA_ERRNO_NOT_IMPLEMENTED error code could come in handy. One use of such an error code could when using drmaa_control() one tries to request a job state change not feasible in specific DRMS. ------------- This seems like a very good idea. Since it is coming late in the process, I suggest we target the recommendation for DRMAA 1.1 Errata. -Hrabri