)

func (api objectAPIHandlers) ListenNotificationHandler(w http.ResponseWriter, r *http.Request) {
	ctx := newContext(r, w, "ListenNotification")

	defer logger.AuditLog(ctx, w, r, mustGetClaimsFromToken(r))

	// Validate if bucket exists.
	objAPI := api.ObjectAPI()
	if objAPI == nil {
		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL)
		return
	}

	vars := mux.Vars(r)
	bucketName := vars["bucket"]

## Troubleshooting

### Common Migration Issues

#### Issue: Import fails with "Invalid format"

**Solution**:
- Ensure NDJSON files have one valid JSON object per line
- Check for UTF-8 encoding
- Validate JSON syntax with `jq`:
  ```bash
  cat documents.ndjson | jq empty
  ```

#### Issue: GSA XML import creates no configurations

**Solution**:
- Verify XML structure matches GSA export format

    }

    @Test
    @DisplayName("Arrays: non-null, same length, and exact contents")
    void arrays_are_well_formed_and_match() {
        // Validate arrays existence and alignment (edge and structure checks)
        assertNotNull(WinError.WINERR_CODES, "WINERR_CODES should not be null");
        assertNotNull(WinError.WINERR_MESSAGES, "WINERR_MESSAGES should not be null");

			var filter Filter
			err := xml.Unmarshal([]byte(tc.inputXML), &filter)
			if err != nil {
				t.Fatalf("%d: Expected no error but got %v", i+1, err)
			}
			err = filter.Validate()
			if err != tc.expectedErr {
				t.Fatalf("%d: Expected %v but got %v", i+1, tc.expectedErr, err)
			}
		})
	}
}

func TestObjectSizeFilters(t *testing.T) {
	f1 := Filter{
		set: true,

func (evnot *EventNotifier) set(bucket string, meta BucketMetadata) {
	config := meta.notificationConfig
	if config == nil {
		return
	}
	region := globalSite.Region()
	config.SetRegion(region)
	if err := config.Validate(region, globalEventNotifier.targetList); err != nil {
		if _, ok := err.(*event.ErrARNNotFound); !ok {
			internalLogIf(GlobalContext, err)
		}
	}
	evnot.AddRulesMap(bucket, config.ToRulesMap())
}

		t.Run(tt.name, func(t *testing.T) {
			// Skip invalid cases where SHA1 or SHA256 is used with full object
			if (tt.checksum.Is(ChecksumSHA1) || tt.checksum.Is(ChecksumSHA256)) && tt.fullobj {
				// Validate that NewChecksumType correctly marks these as invalid
				alg := tt.checksum.String()
				typ := NewChecksumType(alg, xhttp.AmzChecksumTypeFullObject)
				if !typ.Is(ChecksumInvalid) {

    @Nested
    @DisplayName("Model Version Validation")
    class ModelVersionValidationTests {

        @ParameterizedTest
        @ValueSource(strings = {"4.0.0", "4.1.0", "4.2.0"})
        @DisplayName("should validate supported model versions")
        void shouldValidateSupportedModelVersions(String version) {
            assertTrue(ModelVersionUtils.isValidModelVersion(version));
        }

        @ParameterizedTest

        when(otherContext.getConfig()).thenReturn(otherConfig);
        assertFalse(response.canReuse(otherContext, false));
    }

    @Test
    @DisplayName("Should validate response correctly")
    void testIsValid() throws Exception {
        // Setup valid response
        setResponseAsReceived(response);
        setPrivateField(response, "dialectRevision", 0x0311);

		return
	}

	if r.Header.Get(xhttp.Range) != "" {
		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidRange), r.URL)
		return
	}

	// Validate pre-conditions if any.
	opts.CheckPrecondFn = func(oi ObjectInfo) bool {
		if _, err := DecryptObjectInfo(&oi, r); err != nil {
			writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
			return true
		}

///

FastAPI will now:

* **Validate** the data making sure that the max length is 50 characters
* Show a **clear error** for the client when the data is not valid