diff --git a/src/libslic3r/GCode.cpp b/src/libslic3r/GCode.cpp
index 718975e26..1423d636e 100644
--- a/src/libslic3r/GCode.cpp
+++ b/src/libslic3r/GCode.cpp
@@ -1585,6 +1585,21 @@ void GCode::do_export(Print* print, const char* path, GCodeProcessorResult* resu
 
     check_placeholder_parser_failed();
 
+#if ORCA_CHECK_GCODE_PLACEHOLDERS
+    if (!m_placeholder_error_messages.empty()){
+        std::ostringstream message;
+        message << "Some EditGcodeDialog defs were not specified properly. Do so in PrintConfig under SlicingStatesConfigDef:" << std::endl;
+        for (const auto& error : m_placeholder_error_messages) {
+            message << std::endl << error.first << ": " << std::endl;
+            for (const auto& str : error.second)
+                message << str << ", ";
+            message.seekp(-2, std::ios_base::end);
+            message << std::endl;
+        }
+        throw Slic3r::PlaceholderParserError(message.str());
+    }
+#endif
+
     BOOST_LOG_TRIVIAL(debug) << "Start processing gcode, " << log_memory_info();
     // Post-process the G-code to update time stamps.
 
@@ -2915,8 +2930,9 @@ void GCode::process_layers(
 
 std::string GCode::placeholder_parser_process(const std::string &name, const std::string &templ, unsigned int current_extruder_id, const DynamicConfig *config_override)
 {
-    // Orca: Modified functionality from PS implementation since debug is rarely used in current workflow.
-    // Allows generation to be toggled via a CMake config option.
+    // Orca: Added CMake config option since debug is rarely used in current workflow.
+    // Also changed from throwing error immediately to storing messages till slicing is completed
+    // to raise all errors at the same time.
 #if !defined(NDEBUG) || defined(ORCA_CHECK_GCODE_PLACEHOLDERS) // CHECK_CUSTOM_GCODE_PLACEHOLDERS
     if (config_override) {
         const auto& custom_gcode_placeholders = custom_gcode_specific_placeholders();
@@ -2929,17 +2945,24 @@ std::string GCode::placeholder_parser_process(const std::string &name, const std
 
             for (const std::string& key : config_override->keys()) {
                 // 2-nd check: "key" have to be present in s_CustomGcodeSpecificOptions for "name" custom G-code ;
-                if (std::find(placeholders.begin(), placeholders.end(), key) == placeholders.end())
-                    throw Slic3r::PlaceholderParserError(format("\"%s\" placeholder for \"%s\" custom G-code \n"
-                                                                "needs to be added to s_CustomGcodeSpecificOptions", key.c_str(), name.c_str()));
+                if (std::find(placeholders.begin(), placeholders.end(), key) == placeholders.end()) {
+                    auto& vector = m_placeholder_error_messages[name + " - option not specified for custom gcode type (s_CustomGcodeSpecificOptions)"];
+                    if (std::find(vector.begin(), vector.end(), key) == vector.end())
+                        vector.emplace_back(key);
+                }
                 // 3-rd check: "key" have to be present in CustomGcodeSpecificConfigDef for "key" placeholder;
-                if (!custom_gcode_specific_config_def.has(key))
-                    throw Slic3r::PlaceholderParserError(format("Definition of \"%s\" placeholder \n"
-                                                                "needs to be added to CustomGcodeSpecificConfigDef", key.c_str()));
+                if (!custom_gcode_specific_config_def.has(key)) {
+                    auto& vector = m_placeholder_error_messages[name + " - option has no definition (CustomGcodeSpecificConfigDef)"];
+                    if (std::find(vector.begin(), vector.end(), key) == vector.end())
+                        vector.emplace_back(key);
+                }
             }
         }
-        else
-            throw Slic3r::PlaceholderParserError(format("\"%s\" custom G-code needs to be added to s_CustomGcodeSpecificOptions", name.c_str()));
+        else {
+            auto& vector = m_placeholder_error_messages[name + " - gcode type not found in s_CustomGcodeSpecificOptions"];
+            if (vector.empty())
+                vector.emplace_back("");
+        }
     }
 #endif
 
@@ -4294,6 +4317,33 @@ void GCode::apply_print_config(const PrintConfig &print_config)
     m_writer.apply_print_config(print_config);
     m_config.apply(print_config);
     m_scaled_resolution = scaled<double>(print_config.resolution.value);
+
+#if ORCA_CHECK_GCODE_PLACEHOLDERS
+    // If the gcode value is empty, set a value so that the check code within the parser is run
+    for (auto opt : std::initializer_list<ConfigOptionString*>{
+             &m_config.machine_start_gcode,
+             &m_config.machine_end_gcode,
+             &m_config.before_layer_change_gcode,
+             &m_config.layer_change_gcode,
+             &m_config.time_lapse_gcode,
+             &m_config.change_filament_gcode,
+             &m_config.change_extrusion_role_gcode,
+             &m_config.printing_by_object_gcode,
+             &m_config.machine_pause_gcode,
+             &m_config.template_custom_gcode,
+         }) {
+        if (opt->empty())
+            opt->set(new ConfigOptionString(";VALUE FOR TESTING"));
+    }
+    for (auto opt : std::initializer_list<ConfigOptionStrings*>{
+             &m_config.filament_start_gcode,
+             &m_config.filament_end_gcode
+         }) {
+        if (opt->empty())
+            for (int i = 0; i < opt->size(); ++i)
+                opt->set_at(new ConfigOptionString(";VALUE FOR TESTING"), i, 0);
+    }
+#endif
 }
 
 void GCode::append_full_config(const Print &print, std::string &str)
diff --git a/src/libslic3r/GCode.hpp b/src/libslic3r/GCode.hpp
index 7136c83a3..1912dc4d2 100644
--- a/src/libslic3r/GCode.hpp
+++ b/src/libslic3r/GCode.hpp
@@ -518,6 +518,10 @@ private:
     double                              m_last_mm3_per_mm;
 #endif // ENABLE_GCODE_VIEWER_DATA_CHECKING
 
+#if ORCA_CHECK_GCODE_PLACEHOLDERS
+    std::map<std::string, std::vector<std::string>> m_placeholder_error_messages;
+#endif
+
     Point                               m_last_pos;
     bool                                m_last_pos_defined;