Today afternoon we started getting the below error in the lookup dialog box for customer and contact. Unhandled Exception: System.ServiceModel.FaultException`1[[Microsoft.Xrm.Sdk.OrganizationServiceFault, Microsoft.Xrm.Sdk, Version=9.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]]: A quick find filter cannot have any child filtersDetail: <OrganizationServiceFault xmlns:i=”http://www.w3.org/2001/XMLSchema-instance&#8221; xmlns=”http://schemas.microsoft.com/xrm/2011/Contracts”&gt; <ActivityId>a5d85309-b57b-4265-b54e-afd09bfeeddc</ActivityId> <ErrorCode>-2147217118</ErrorCode> <ErrorDetails xmlns:d2p1=”http://schemas.datacontract.org/2004/07/System.Collections.Generic”&gt; <KeyValuePairOfstringanyType> <d2p1:key>ApiExceptionSourceKey</d2p1:key> <d2p1:value xmlns:d4p1=”http://www.w3.org/2001/XMLSchema&#8221; i:type=”d4p1:string”>Plugin/Microsoft.Crm.Common.ObjectModel.AccountService</d2p1:value> </KeyValuePairOfstringanyType> <KeyValuePairOfstringanyType> Searching for this in the internet we found … Continue reading "A quick find filter cannot have any child filters exception in Dynamics 365 CE"