Reasons for SyncError and resolution in V3

What causes a SyncError in V3 and how do you resolve it? If it is validation-related, why is the API unable to handle it? Lastly, is there ever an indication to the QBD user?

Solution

You need to resolve this prob using V2 API.

PFB links related to Sync process

https://developer.intuit.com/docs/0025_quickbooksapi/0050_data_services/v2/0500_quickbooks_windows/0300_sync_manager

https://developer.intuit.com/docs/0025_quickbooksapi/0050_data_services/v2/0500_quickbooks_windows/0400_data_synchronization

To know which object are in error state, please refer

https://developer.intuit.com/docs/0025_quickbooksapi/0050_data_services/v2/0500_quickbooks_windows/0100_calling_data_services/0015_retrieving_objects

You may also be interested to know why those objects are in error state. For that, please refer Status API. Ex -

<?xml version="1.0" encoding="UTF-16"?>
<CustomerQuery ErroredObjectsOnly="true" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://www.intuit.com/sb/cdm/v2">
</CustomerQuery>

https://developer.intuit.com/docs/0025_quickbooksapi/0050_data_services/v2/0500_quickbooks_windows/0600_object_reference/syncstatus

<SyncStatusRequest ErroredObjectsOnly="true" xmlns="http://www.intuit.com/sb/cdm/v2">
    <NgIdSet>
        <NgId>1527022</NgId>
        <NgObjectType>Invoice</NgObjectType>
    </NgIdSet>
    <StartCreatedTMS>1986-02-05T14:51:18.038+05:30</StartCreatedTMS>
    <EndCreatedTMS>2015-11-05T14:51:18.038+05:30</EndCreatedTMS>
</SyncStatusRequest>

You can try all these calls using API Explorer. https://developer.intuit.com/apiexplorer?apiname=V2QBD

In V3, above APIs are not supported yet. V3 supported entity and operations - https://developer.intuit.com/docs/0025_quickbooksapi/0050_data_services/v3/030_entity_services_reference/0500_v3_supported_entities_and_operations

Thanks