From 27546c0f4ca687993024d30ed078d60c3d361557 Mon Sep 17 00:00:00 2001
From: Christoph Lehmann <christoph.lehmann@ufz.de>
Date: Tue, 21 Nov 2023 14:28:48 +0100
Subject: [PATCH] [PL/BC] Added a check for the presence of the component

---
 .../CreateBoundaryCondition.cpp                          | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/ProcessLib/BoundaryConditionAndSourceTerm/CreateBoundaryCondition.cpp b/ProcessLib/BoundaryConditionAndSourceTerm/CreateBoundaryCondition.cpp
index 4191dba25f2..2f25857fe25 100644
--- a/ProcessLib/BoundaryConditionAndSourceTerm/CreateBoundaryCondition.cpp
+++ b/ProcessLib/BoundaryConditionAndSourceTerm/CreateBoundaryCondition.cpp
@@ -54,6 +54,15 @@ std::unique_ptr<BoundaryCondition> createBoundaryCondition(
     //! \ogs_file_param{prj__process_variables__process_variable__boundary_conditions__boundary_condition__type}
     auto const type = config.config.peekConfigParameter<std::string>("type");
 
+    if (bool const component_id_required = type != "NormalTraction";
+        component_id_required && !config.component_id.has_value())
+    {
+        OGS_FATAL(
+            "Specifying the component id (<component>) for a boundary "
+            "condition of type {} is mandatory.",
+            type);
+    }
+
     if (type == "Dirichlet")
     {
         return ProcessLib::createDirichletBoundaryCondition(