diff --git a/casadm/cas_lib.c b/casadm/cas_lib.c
index b596258..dfa7d53 100644
--- a/casadm/cas_lib.c
+++ b/casadm/cas_lib.c
@@ -1099,8 +1099,7 @@ int get_cache_mode(int ctrl_fd, unsigned int cache_id, int *mode)
 	if (ioctl(ctrl_fd, KCAS_IOCTL_CACHE_INFO, &cmd_info) < 0)
 	{
 		if (cmd_info.ext_err_code == OCF_ERR_CACHE_STANDBY)
-			cas_printf(LOG_ERR, "Cannot get cache mode while cache %d is in standby mode.", cmd_info.cache_id);
-
+			print_err(cmd_info.ext_err_code);
 		return FAILURE;
 	}
 	*mode = cmd_info.info.cache_mode;
@@ -1166,8 +1165,7 @@ int set_cache_mode(unsigned int cache_mode, unsigned int cache_id, int flush)
 				"'--flush-cache no' parameter.\n");
 			return INTERRUPTED;
 		} else if (OCF_ERR_CACHE_STANDBY == cmd.ext_err_code) {
-			cas_printf(LOG_ERR, "Cannot change cache mode while cache %d is in standby mode\n",
-				cache_id);
+			print_err(cmd.ext_err_code);
 			return FAILURE;
 		} else {
 			cas_printf(LOG_ERR, "Error while setting cache state for cache %d\n",
@@ -1229,7 +1227,7 @@ int core_params_set(unsigned int cache_id, unsigned int core_id,
 		if (run_ioctl(fd, KCAS_IOCTL_SET_CORE_PARAM, &cmd) < 0) {
 			close(fd);
 			if (cmd.ext_err_code == OCF_ERR_CACHE_STANDBY) {
-				cas_printf(LOG_ERR, "Cannot set parameters for cache %d while in standby mode.\n", cmd.cache_id);
+				print_err(cmd.ext_err_code);
 			}
 			return FAILURE;
 		}
@@ -1331,8 +1329,7 @@ int cache_params_set(unsigned int cache_id, struct cas_param *params)
 
 		if (run_ioctl(fd, KCAS_IOCTL_SET_CACHE_PARAM, &cmd) < 0) {
 			if (cmd.ext_err_code == OCF_ERR_CACHE_STANDBY)
-				cas_printf(LOG_ERR, "Cannot set cache parameters while cache %d is in standby mode\n", cmd.cache_id);
-
+				print_err(cmd.ext_err_code);
 			close(fd);
 			return FAILURE;
 		}
@@ -1374,7 +1371,7 @@ int cache_params_get(unsigned int cache_id, struct cas_param *params,
 			if (cmd.ext_err_code == OCF_ERR_CACHE_NOT_EXIST)
 				cas_printf(LOG_ERR, "Cache id %d not running\n", cache_id);
 			else if (cmd.ext_err_code == OCF_ERR_CACHE_STANDBY)
-				cas_printf(LOG_ERR, "Cannot get cache parameters while cache %d is in standby mode\n", cmd.cache_id);
+				print_err(cmd.ext_err_code);
 			else
 				cas_printf(LOG_ERR, "Can't get parameters\n");
 			fclose(intermediate_file[0]);
@@ -1701,8 +1698,6 @@ int add_core(unsigned int cache_id, unsigned int core_id, const char *core_devic
 				  "accessing it or unmount the device.\n",
 				  user_core_path);
 			}
-		} else if (OCF_ERR_CACHE_STANDBY == cmd.ext_err_code) {
-			cas_printf(LOG_ERR, "Cannot add core to cache %d in standby mode\n", cache_id);
 		} else {
 			print_err(cmd.ext_err_code);
 		}
@@ -1939,9 +1934,6 @@ int flush_cache(unsigned int cache_id)
 		if (OCF_ERR_FLUSHING_INTERRUPTED == cmd.ext_err_code) {
 			cas_printf(LOG_ERR, DIRTY_FLUSHING_WARNING);
 			return INTERRUPTED;
-		} else if (OCF_ERR_CACHE_STANDBY == cmd.ext_err_code) {
-			cas_printf(LOG_ERR, "Cannot flush cache %d in standby mode\n", cmd.cache_id);
-			return FAILURE;
 		} else {
 			print_err(cmd.ext_err_code);
 			return FAILURE;
@@ -1969,10 +1961,7 @@ int purge_core(unsigned int cache_id, unsigned int core_id)
 	if (run_ioctl_interruptible(fd, KCAS_IOCTL_PURGE_CORE, &cmd, "Purging core", cache_id, core_id) < 0) {
 		close(fd);
 
-		if (OCF_ERR_CACHE_STANDBY == cmd.ext_err_code)
-			cas_printf(LOG_ERR, "Cannot purge core while cache %d is in standby mode\n", cmd.cache_id);
-		else
-			print_err(cmd.ext_err_code);
+		print_err(cmd.ext_err_code);
 
 		return FAILURE;
 	}
@@ -2393,7 +2382,7 @@ int partition_set_config(struct kcas_io_classes *cnfg)
 		if (OCF_ERR_IO_CLASS_NOT_EXIST == cnfg->ext_err_code) {
 			result = SUCCESS;
 		} else if (OCF_ERR_CACHE_STANDBY == cnfg->ext_err_code) {
-			cas_printf(LOG_ERR, "Cannot set IO class config for cache %d while in standby mode.\n", cnfg->cache_id);
+			print_err(cnfg->ext_err_code);
 			result = FAILURE;
 		} else {
 			print_err(cnfg->ext_err_code);
@@ -2469,12 +2458,14 @@ int reset_counters(unsigned int cache_id, unsigned int core_id)
 	cmd.core_id = core_id;
 
 	if (ioctl(fd, KCAS_IOCTL_RESET_STATS, &cmd) < 0) {
+		
 		if (OCF_ERR_CACHE_STANDBY == cmd.ext_err_code) {
-			cas_printf(LOG_ERR, "Cannot reset statistics for cache %d while in standby mode.\n", cmd.cache_id);
+			print_err(cmd.ext_err_code);
 		} else {
 			cas_printf(LOG_ERR, "Error encountered while resetting counters\n");
 			print_err(cmd.ext_err_code);
 		}
+
 		close(fd);
 		return FAILURE;
 	}
diff --git a/casadm/extended_err_msg.c b/casadm/extended_err_msg.c
index eefb6a2..78752bf 100644
--- a/casadm/extended_err_msg.c
+++ b/casadm/extended_err_msg.c
@@ -180,7 +180,7 @@ struct {
 	},
 	{
 		OCF_ERR_CACHE_STANDBY,
-		"Operation not permitted in failover standby mode"
+		"The operation is not permited while the cache is in the standby mode"
 	},
 	{
 		OCF_ERR_STANDBY_ATTACHED,
diff --git a/modules/cas_cache/layer_cache_management.c b/modules/cas_cache/layer_cache_management.c
index 42b1e47..e199771 100644
--- a/modules/cas_cache/layer_cache_management.c
+++ b/modules/cas_cache/layer_cache_management.c
@@ -1711,6 +1711,11 @@ int cache_mngt_set_partitions(const char *cache_name, size_t name_len,
 					name_len, &cache);
 	if (result)
 		goto out_get;
+	
+	if (ocf_cache_is_standby(cache)) {
+		result = -OCF_ERR_CACHE_STANDBY;
+		goto out_standby;
+	}
 
 	for (class_id = 0; class_id < OCF_USER_IO_CLASS_MAX; class_id++) {
 		result = cas_cls_rule_create(cache, class_id,
@@ -1744,6 +1749,7 @@ out_cls:
 		while (class_id--)
 			cas_cls_rule_destroy(cache, cls_rule[class_id]);
 	}
+out_standby:
 	ocf_mngt_cache_put(cache);
 out_get:
 	kfree(io_class_cfg);