PMI2_ERR_INVALID_KEY  838 opal/mca/pmix/pmix4x/pmix/src/client/pmi2.c         return PMI2_ERR_INVALID_KEY;
PMI2_ERR_INVALID_KEY  757 opal/mca/pmix/s2/pmix_s2.c     case PMI2_ERR_INVALID_KEY: err_msg = "Invalid key argument"; break;