Often times if your users are creating data when offline, and you have not enabled Salesforce validation rules to run in Pulsar, the application allows the user to create the data but during sync, you will run into validation rule failures and the log message will look something like this snippet below.
[20-06-12 00:12:26][ERROR][0x16f57b000] - doSalesforceSoapRequest failure in response
[20-06-12 00:12:26][ERROR][0x16f57b000] - error(FIELD_CUSTOM_VALIDATION_EXCEPTION) fields(none) description(Only System Admins can change the account name)
[20-06-12 00:12:26][ERROR][0x16f57b000] - doUpdate Account failed (128)
In order to avoid this problem, simply enable validation rules you have set up on Salesforce to run in Pulsar even when the user is in offline mode.