diff --git a/backend/src/main/kotlin/com/opendatamask/model/JobLog.kt b/backend/src/main/kotlin/com/opendatamask/model/JobLog.kt
index 8be795e..f933112 100644
--- a/backend/src/main/kotlin/com/opendatamask/model/JobLog.kt
+++ b/backend/src/main/kotlin/com/opendatamask/model/JobLog.kt
@@ -4,7 +4,7 @@ import jakarta.persistence.*
 import java.time.LocalDateTime
 
 enum class LogLevel {
-    INFO, WARN, ERROR
+    DEBUG, INFO, WARN, ERROR
 }
 
 @Entity
diff --git a/backend/src/main/kotlin/com/opendatamask/model/TableConfiguration.kt b/backend/src/main/kotlin/com/opendatamask/model/TableConfiguration.kt
index c1f1f1a..00b1bfe 100644
--- a/backend/src/main/kotlin/com/opendatamask/model/TableConfiguration.kt
+++ b/backend/src/main/kotlin/com/opendatamask/model/TableConfiguration.kt
@@ -4,7 +4,7 @@ import jakarta.persistence.*
 import java.time.LocalDateTime
 
 enum class TableMode {
-    PASSTHROUGH, MASK, GENERATE, SUBSET
+    PASSTHROUGH, MASK, GENERATE, SUBSET, SKIP
 }
 
 @Entity
diff --git a/backend/src/main/kotlin/com/opendatamask/service/JobService.kt b/backend/src/main/kotlin/com/opendatamask/service/JobService.kt
index d8659be..8f0c185 100644
--- a/backend/src/main/kotlin/com/opendatamask/service/JobService.kt
+++ b/backend/src/main/kotlin/com/opendatamask/service/JobService.kt
@@ -123,6 +123,10 @@ class JobService(
             addLog(job.id, "Processing ${tableConfigs.size} table(s)", LogLevel.INFO)
 
             for (tableConfig in tableConfigs) {
+                if (tableConfig.mode == TableMode.SKIP) {
+                    addLog(job.id, "Skipping table: ${tableConfig.tableName}", LogLevel.INFO)
+                    continue
+                }
                 addLog(job.id, "Mirroring schema for table: ${tableConfig.tableName}", LogLevel.INFO)
                 destinationSchemaService.mirrorSchema(
                     sourceConnector, sourceConn.type,
@@ -194,6 +198,9 @@ class JobService(
                 val written = destConnector.writeData(tableConfig.tableName, data)
                 addLog(jobId, "Wrote $written rows to destination ${tableConfig.tableName}", LogLevel.INFO)
             }
+            TableMode.SKIP -> {
+                // unreachable: SKIP tables are short-circuited in the calling loop
+            }
         }
     }
 
diff --git a/backend/src/test/kotlin/com/opendatamask/model/EnumAlignmentTest.kt b/backend/src/test/kotlin/com/opendatamask/model/EnumAlignmentTest.kt
index 83a6ab8..c01bbae 100644
--- a/backend/src/test/kotlin/com/opendatamask/model/EnumAlignmentTest.kt
+++ b/backend/src/test/kotlin/com/opendatamask/model/EnumAlignmentTest.kt
@@ -21,8 +21,37 @@ class EnumAlignmentTest {
     }
 
     @Test
-    fun `WorkspaceRole contains VIEWER`() {
+    fun `UserRole contains canonical set`() {
+        val values = UserRole.values().map { it.name }.toSet()
+        val expected = setOf("ADMIN", "USER", "VIEWER")
+        assertEquals(expected, values, "UserRole values do not match canonical set")
+    }
+
+    @Test
+    fun `WorkspaceRole contains canonical set`() {
         val values = WorkspaceRole.values().map { it.name }.toSet()
-        assertTrue(values.contains("VIEWER"), "WorkspaceRole must contain VIEWER")
+        val expected = setOf("ADMIN", "USER", "VIEWER")
+        assertEquals(expected, values, "WorkspaceRole values do not match canonical set")
+    }
+
+    @Test
+    fun `TableMode contains canonical set`() {
+        val values = TableMode.values().map { it.name }.toSet()
+        val expected = setOf("PASSTHROUGH", "MASK", "GENERATE", "SUBSET", "SKIP")
+        assertEquals(expected, values, "TableMode values do not match canonical set")
+    }
+
+    @Test
+    fun `LogLevel contains canonical set`() {
+        val values = LogLevel.values().map { it.name }.toSet()
+        val expected = setOf("DEBUG", "INFO", "WARN", "ERROR")
+        assertEquals(expected, values, "LogLevel values do not match canonical set")
+    }
+
+    @Test
+    fun `JobStatus contains canonical set`() {
+        val values = JobStatus.values().map { it.name }.toSet()
+        val expected = setOf("PENDING", "RUNNING", "COMPLETED", "FAILED", "CANCELLED")
+        assertEquals(expected, values, "JobStatus values do not match canonical set")
     }
 }