diff --git a/modules/channel/chain/dap_stream_ch_chain.c b/modules/channel/chain/dap_stream_ch_chain.c
index 39134af5b5db641930848c89ffc84c852b35d5ab..48a034ac7f294c0abbe73dd926d3ad94573b8ced 100644
--- a/modules/channel/chain/dap_stream_ch_chain.c
+++ b/modules/channel/chain/dap_stream_ch_chain.c
@@ -744,32 +744,30 @@ static bool s_gdb_in_pkt_proc_callback(dap_proc_thread_t *a_thread, void *a_arg)
                 char l_ts_str[50];
                 dap_time_to_str_rfc822(l_ts_str, sizeof(l_ts_str), l_store_obj[i].timestamp);
                 log_it(L_DEBUG, "Unpacked log history: type='%c' (0x%02hhX) group=\"%s\" key=\"%s\""
-                        " timestamp=\"%s\" value_len=%zu  ",
-                        (char ) l_store_obj[i].type, l_store_obj[i].type, l_store_obj[i].group,
+                        " timestamp=\"%s\" value_len=%zu",
+                        (char )l_store_obj[i].type, l_store_obj[i].type, l_store_obj[i].group,
                         l_store_obj[i].key, l_ts_str, l_store_obj[i].value_len);
             }
             if (!l_apply) {
+                log_it(L_WARNING, "New data not applied");
                 continue;
             }
-
             // apply received transaction
             dap_chain_t *l_chain = dap_chain_find_by_id(l_sync_request->request_hdr.net_id, l_sync_request->request_hdr.chain_id);
 
-            //
-            // if chain is zero, it can be on of GDB group
-            // 
+            // if chain is zero, it's name can be part of GDB group name
             if (!l_chain)
                  l_chain = dap_chain_get_chain_from_group_name(l_sync_request->request_hdr.net_id, l_obj->group);
 
             if(l_chain) {
+                log_it(L_WARNING, "New data goes to GDB chain");
                 if(l_chain->callback_add_datums_with_group){
                     const void * restrict l_store_obj_value = l_store_obj[i].value;
                     l_chain->callback_add_datums_with_group(l_chain,
                             (dap_chain_datum_t** restrict) &l_store_obj_value, 1,
                             l_store_obj[i].group);
                 }
-            } else 
-            {
+            } else {
                 // save data to global_db
                 if(!dap_chain_global_db_obj_save(l_obj, 1)) {
                     struct sync_request *l_sync_req_err = DAP_DUP(l_sync_request);