6.4.4.2 In addition, rlm_activate()/rlm_act_request() will return the following errors:

RLM_ACT_BADPARAM-1001Unused – RLM_EH_BADPARAM returned instead.
RLM_ACT_NO_KEY-1002No activation key supplied
RLM_ACT_NO_PROD-1003No product definition exists
RLM_ACT_CANT_WRITE_KEYS-1004Can't write keyf table
RLM_ACT_KEY_USED-1005Activation key already used
RLM_ACT_BAD_HOSTID-1006Missing hostid
RLM_ACT_BAD_HOSTID_TYPE-1007Invalid hostid type
RLM_ACT_BAD_HTTP-1008Bad HTTP transaction. Note: unused after v3.0BL4
RLM_ACT_CANTLOCK-1009Can't lock activation database
RLM_ACT_CANTREAD_DB-1010Can't read activation database
RLM_ACT_CANT_WRITE_FUFILL-1011Can't write licf table
RLM_ACT_CLIENT_TIME_BAD-1012Clock bad on client system (not within 7 days of server)
RLM_ACT_BAD_REDIRECT-1013Can't write licf table
RLM_ACT_TOOMANY_HOSTID_CHANGES-1014Too many hostid changes for refresh-type activation
RLM_ACT_BLACKLISTED-1015Domain on banned list for activation
RLM_ACT_NOT_WHITELISTED-1016Domain not on activation key allowed list
RLM_ACT_KEY_EXPIRED-1017Activation key expired
RLM_ACT_NO_PERMISSION-1018HTTP request denied (this is a setup problem)
RLM_ACT_SERVER_ERROR-1019HTTP internal server error (usually a setup problem)
RLM_ACT_BAD_GENERATOR-1020Bad/missing generator file (Activation Pro)
RLM_ACT_NO_KEY_MATCH-1021No matching activation key in database
RLM_ACT_NO_AUTH_SUPPLIED-1022No proxy authorization supplied
RLM_ACT_PROXY_AUTH_FAILED-1023Proxy authentication failed
RLM_ACT_NO_BASIC_AUTH-1024No basic authentication supported by proxy
RLM_ACT_GEN_UNLICENSED-1025Activation generator unlicensed (ISV_mklic)
RL_ACT_DB_READERR-1026Activation database read error 
(Activation Pro)
RLM_ACT_GEN_PARAM_ERR-1027Generating license - bad parameter
RLM_ACT_UNSUPPORTED_CMD-1028Unsupported command to license generator
RLM_ACT_REVOKE_TOOLATE-1029Revoke command after expiration.
RLM_ACT_KEY_DISABLED-1030Activation key disabled.
RLM_ACT_KEY_NO_HOSTID-1031Key not fulfilled on this hostid.
RLM_ACT_KEY_HOSTID_REVOKED-1032Key revoked on this hostid.
RLM_ACT_NO_FULFILLMENTS-1033No fulfillments to remove.
RLM_ACT_LICENSE_TOOBIG-1034Generated license too long.
RLM_ACT_NO_REHOST-1035Counted licenses can’t be rehostable.
RLM_ACT_BAD_URL-1036License Generator not found on server.
RLM_ACT_NO_LICENSES-1037RLM Cloud: No licenses found.
RLM_ACT_NO_CLEAR-1038Unencrypted requests not allowed.
RLM_ACT_BAD_KEY-1039Bad activation key (illegal char).
RCC_CANT_WRITE_FULFILL-1040RLM Cloud: Can’t write licf table.
RCC_PORTAL_CANT_WRITE_FULFILL-1041RLM Cloud: Can’t write licf table.
RLM_ACT_KEY_TOOMANY-1042Insufficient count left in activation key.
RLM_ACT_SUB_BADTYPE-1043Subscription license not Nodelocked or Single.
RLM_ACT_CONTACT_BAD-1044Contact information supplied is bad.