diff --git a/core/osrd-reporting/src/main/java/fr/sncf/osrd/reporting/exceptions/ErrorType.java b/core/osrd-reporting/src/main/java/fr/sncf/osrd/reporting/exceptions/ErrorType.java
index fa230450f62..4b3f8e356a3 100644
--- a/core/osrd-reporting/src/main/java/fr/sncf/osrd/reporting/exceptions/ErrorType.java
+++ b/core/osrd-reporting/src/main/java/fr/sncf/osrd/reporting/exceptions/ErrorType.java
@@ -26,7 +26,7 @@ public enum ErrorType {
     StrictWarningError("strict_warning", "Warning was reported with strict mode enabled", ErrorCause.USER),
     AssertionError("assert_error", "assert check failed", ErrorCause.INTERNAL),
     UnknownError("unknown_error", "An unknown exception was thrown", ErrorCause.INTERNAL),
-    InfraSoftLoadingError("infra_loading:soft_error", "soft error while loading new infra", ErrorCause.USER, false),
+    InfraSoftLoadingError("infra_loading:soft_error", "soft error while loading new infra", ErrorCause.USER, true),
     InfraHardLoadingError("infra_loading:hard_error", "hard error while loading new infra", ErrorCause.USER),
     InfraHardError("infra:hard_error", "hard error while parsing infra", ErrorCause.USER),
     InfraLoadingCacheException("infra_loading:cache_exception", "cached exception", ErrorCause.INTERNAL),
@@ -175,16 +175,16 @@ public enum ErrorType {
     public final String type;
     public final String message;
     public final ErrorCause cause;
-    public final boolean isCacheable;
+    public final boolean unrecoverable;
 
     ErrorType(String type, String message, ErrorCause cause) {
-        this(type, message, cause, true);
+        this(type, message, cause, false);
     }
 
-    ErrorType(String type, String message, ErrorCause cause, boolean isCacheable) {
+    ErrorType(String type, String message, ErrorCause cause, boolean unrecoverable) {
         this.type = "core:" + type;
         this.message = message;
         this.cause = cause;
-        this.isCacheable = isCacheable;
+        this.unrecoverable = unrecoverable;
     }
 }
diff --git a/core/src/main/java/fr/sncf/osrd/api/ExceptionHandler.java b/core/src/main/java/fr/sncf/osrd/api/ExceptionHandler.java
index 9952b9ee0ca..de39e1fde5d 100644
--- a/core/src/main/java/fr/sncf/osrd/api/ExceptionHandler.java
+++ b/core/src/main/java/fr/sncf/osrd/api/ExceptionHandler.java
@@ -1,7 +1,6 @@
 package fr.sncf.osrd.api;
 
 import fr.sncf.osrd.reporting.exceptions.ErrorCause;
-import fr.sncf.osrd.reporting.exceptions.ErrorType;
 import fr.sncf.osrd.reporting.exceptions.OSRDError;
 import org.takes.Response;
 import org.takes.rs.RsJson;
@@ -15,7 +14,7 @@ public class ExceptionHandler {
     public static Response handle(Throwable ex) throws OSRDError {
         ex.printStackTrace();
         if (ex instanceof OSRDError osrdError) {
-            if (osrdError.osrdErrorType == ErrorType.InfraSoftLoadingError) {
+            if (osrdError.osrdErrorType.unrecoverable) {
                 throw osrdError;
             }
             return toResponse(osrdError);
diff --git a/core/src/main/kotlin/fr/sncf/osrd/api/api_v2/pathfinding/PathfindingBlocksEndpointV2.kt b/core/src/main/kotlin/fr/sncf/osrd/api/api_v2/pathfinding/PathfindingBlocksEndpointV2.kt
index b4ae7b2b7b1..d34c5c0016c 100644
--- a/core/src/main/kotlin/fr/sncf/osrd/api/api_v2/pathfinding/PathfindingBlocksEndpointV2.kt
+++ b/core/src/main/kotlin/fr/sncf/osrd/api/api_v2/pathfinding/PathfindingBlocksEndpointV2.kt
@@ -62,7 +62,7 @@ class PathfindingBlocksEndpointV2(private val infraManager: InfraManager) : Take
             pathfindingLogger.info("No path found")
             RsJson(RsWithBody(pathfindingResponseAdapter.toJson(error.response)))
         } catch (ex: Throwable) {
-            if (ex is OSRDError && ex.osrdErrorType.isCacheable) {
+            if (ex is OSRDError && !ex.osrdErrorType.unrecoverable) {
                 pathfindingLogger.info("Pathfinding failed: ${ex.message}")
                 val response = PathfindingFailed(ex)
                 RsJson(RsWithBody(pathfindingResponseAdapter.toJson(response)))
diff --git a/core/src/main/kotlin/fr/sncf/osrd/api/api_v2/standalone_sim/SimulationEndpoint.kt b/core/src/main/kotlin/fr/sncf/osrd/api/api_v2/standalone_sim/SimulationEndpoint.kt
index 3f01b10720f..46743fb10dd 100644
--- a/core/src/main/kotlin/fr/sncf/osrd/api/api_v2/standalone_sim/SimulationEndpoint.kt
+++ b/core/src/main/kotlin/fr/sncf/osrd/api/api_v2/standalone_sim/SimulationEndpoint.kt
@@ -73,7 +73,7 @@ class SimulationEndpoint(
                 )
             return RsJson(RsWithBody(simulationResponseAdapter.toJson(res)))
         } catch (ex: Throwable) {
-            if (ex is OSRDError && ex.osrdErrorType.isCacheable) {
+            if (ex is OSRDError && !ex.osrdErrorType.unrecoverable) {
                 val response = SimulationFailed(ex)
                 return RsJson(RsWithBody(simulationResponseAdapter.toJson(response)))
             }