diff --git a/src/main/resources/swagger.api/schemas/bulk_operation_dto.json b/src/main/resources/swagger.api/schemas/bulk_operation_dto.json
index c1b18a240..2d109a192 100644
--- a/src/main/resources/swagger.api/schemas/bulk_operation_dto.json
+++ b/src/main/resources/swagger.api/schemas/bulk_operation_dto.json
@@ -122,12 +122,24 @@
         "format": "int64",
         "default": 0
       },
+      "matchedNumOfWarnings": {
+        "description": "Number of matching warnings",
+        "type": "integer",
+        "format": "int64",
+        "default": 0
+      },
       "committedNumOfErrors": {
         "description": "Number of committing errors",
         "type": "integer",
         "format": "int64",
         "default": 0
       },
+      "committedNumOfWarnings": {
+        "description": "Number of committing warnings",
+        "type": "integer",
+        "format": "int64",
+        "default": 0
+      },
       "executionChunkSize": {
         "description": "Size of chunk",
         "type": "integer",
diff --git a/src/main/resources/swagger.api/schemas/error.json b/src/main/resources/swagger.api/schemas/error.json
index 97a99a9ff..499bb7c53 100644
--- a/src/main/resources/swagger.api/schemas/error.json
+++ b/src/main/resources/swagger.api/schemas/error.json
@@ -7,8 +7,8 @@
       "description": "Error message text"
     },
     "type": {
-      "type": "string",
-      "description": "Error message type"
+      "description": "Error message type",
+      "$ref": "error_type.json#/ErrorType"
     },
     "code": {
       "type": "string",
@@ -18,6 +18,10 @@
       "type": "object",
       "description": "Error message parameters",
       "$ref": "parameters.json"
+    },
+    "field": {
+      "type": "string",
+      "description": "Name of failed field"
     }
   },
   "additionalProperties": false,
diff --git a/src/main/resources/swagger.api/schemas/error_type.json b/src/main/resources/swagger.api/schemas/error_type.json
new file mode 100644
index 000000000..ccc49bf04
--- /dev/null
+++ b/src/main/resources/swagger.api/schemas/error_type.json
@@ -0,0 +1,12 @@
+{
+  "$schema": "http://json-schema.org/draft-04/schema#",
+  "description": "Type of error",
+  "ErrorType": {
+    "type": "string",
+    "enum": [
+      "ERROR",
+      "WARNING"
+    ],
+    "default": "ERROR"
+  }
+}
diff --git a/src/test/java/org/folio/bulkops/service/ErrorServiceTest.java b/src/test/java/org/folio/bulkops/service/ErrorServiceTest.java
index ea2540870..243b6101d 100644
--- a/src/test/java/org/folio/bulkops/service/ErrorServiceTest.java
+++ b/src/test/java/org/folio/bulkops/service/ErrorServiceTest.java
@@ -41,6 +41,7 @@
 import org.folio.bulkops.domain.bean.RelatedInstanceInfo;
 import org.folio.bulkops.domain.bean.SrsRecord;
 import org.folio.bulkops.domain.dto.Error;
+import org.folio.bulkops.domain.dto.ErrorType;
 import org.folio.bulkops.domain.dto.Errors;
 import org.folio.bulkops.domain.dto.IdentifierType;
 import org.folio.bulkops.domain.dto.OperationStatusType;
@@ -407,8 +408,8 @@ private void mockErrorsData(OperationStatusType statusType, UUID operationId) {
     if (DATA_MODIFICATION == statusType || COMPLETED_WITH_ERRORS == statusType) {
       when(bulkEditClient.getErrorsPreview(any(UUID.class), anyInt()))
         .thenReturn(new Errors()
-          .errors(List.of(new Error().type("BULK_EDIT_ERROR").message("123,No match found"),
-            new Error().type("BULK_EDIT_ERROR").message("456,Invalid format"))));
+          .errors(List.of(new Error().type(ErrorType.ERROR).message("123,No match found"),
+            new Error().type(ErrorType.ERROR).message("456,Invalid format"))));
     } else {
       executionContentRepository.save(BulkOperationExecutionContent.builder()
         .bulkOperationId(operationId)