update doc

Signed-off-by: Nshawn_he <shawn.he@huawei.com>

en/application-dev/reference/errorcodes/errorcode-geoLocationManager.md

+# Location Subsystem Error Codes
+
+## 3301000 Location Service Unavailable
+
+**Error Message**
+
+Location service is unavailable.
+
+**Description**
+
+This error code is reported when the location service is unavailable and relevant APIs cannot be called.
+
+**Possible Causes**
+
+1. The location service fails to be started. As a result, the communication between the application and the location service fails, and the location service is unavailable.
+
+2. The GNSS chip fails to be initialized, and thus the GNSS positioning function becomes invalid.
+
+3. The network positioning service is abnormal, and thus the network positioning function becomes invalid.
+
+**Solution**
+
+Stop calling the API.
+
+## 3301100 Location Service Unavailable Because of Switch Toggled Off
+
+**Error Message**
+
+The location switch is off.
+
+**Description**
+
+This error code is reported when the location service is unavailable because the service switch is toggled off.
+
+**Possible Causes**
+
+The location service switch is toggled off, which makes basic functions such as continuous positioning and immediate positioning unavailable.
+
+**Solution**
+
+Display a prompt asking for enabling the location service.
+
+## 3301200 Failure to Obtain the Positioning Result
+
+**Error Message**
+
+Failed to obtain the geographical location.
+
+**Description**
+
+This error code is reported when the location service fails, and no positioning result is obtained.
+
+**Possible Causes**
+
+1. Positioning timed out because of weak GNSS signals.
+
+2. Positioning timed out because the network positioning service is abnormal.
+
+**Solution**
+
+Initiate a positioning request again.
+
+## 3301300 Reverse Geocoding Query Failure
+
+**Error Message**
+
+Reverse geocoding query failed.
+
+**Description**
+
+This error code is reported for a reverse geocoding query failure.
+
+**Possible Causes**
+
+Network connection is poor, which makes the request fail to be sent from the device or the result fail to be returned from the cloud to the device.
+
+**Solution**
+
+Try the reverse geocoding query again.
+
+## 3301400 Geocoding Query Failure
+
+**Error Message**
+
+Geocoding query failed.
+
+**Description**
+
+This error code is reported for a geocoding query failure.
+
+**Possible Causes**
+
+Network connection is poor, which makes the request fail to be sent from the device or the result fail to be returned from the cloud to the device.
+
+**Solution**
+
+Try the geocoding query again.
+
+## 3301500 Area Information Query Failure
+
+**Error Message**
+
+Failed to query the area information.
+
+**Description**
+
+This error code is reported for the failure to query the area information (including the country code).
+
+**Possible Causes**
+
+The correct area information is not found.
+
+**Solution**
+
+Stop calling the API for querying the country code.
+
+## 3301600 Geofence Operation Failure
+
+**Error Message**
+
+Failed to operate the geofence.
+
+**Description**
+
+This error code is reported when an operation (like adding, deleting, pausing, and resuming) fails to be performed on the geofence.
+
+**Possible Causes**
+
+1. The GNSS chip does not support the geofence function.
+
+2. The bottom-layer service logic is abnormal.
+
+**Solution**
+
+Stop calling the geofence operation API.
+
+## 3301700 No Response to the Request
+
+**Error Message**
+
+No response to the request.
+
+**Description**
+
+This error code is reported when no response is received for an asynchronous request that requires a user to click a button for confirmation or requires a response from the GNSS chip or network server.
+
+**Possible Causes**
+
+1. The user does not click a button as required for confirmation.
+
+2. The GNSS chip does not respond.
+
+3. The network server does not respond.
+
+**Solution**
+
+Stop calling relevant APIs.