Question: GroupJoin issue

[RamanSggs]

Here is what to include in your request to make sure we implement a solution as quickly as possible.

I am using GroupJoin with resultparameter as "new(outer.Name as OwnerName, group as Pets)"

2. Exception

Getting error as Unknown identifier 'group'

Exception message:
Unhandled exception. Unknown identifier 'group' (at index 29)
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseIdentifier() in C:\Dev\GitHub\System.Linq.Dynamic.Core\src\System.Linq.Dynamic.Core\Parser\ExpressionParser.cs:line 1056
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParsePrimaryStart() in C:\Dev\GitHub\System.Linq.Dynamic.Core\src\System.Linq.Dynamic.Core\Parser\ExpressionParser.cs:line 838
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParsePrimary() in C:\Dev\GitHub\System.Linq.Dynamic.Core\src\System.Linq.Dynamic.Core\Parser\ExpressionParser.cs:line 806
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseUnary() in C:\Dev\GitHub\System.Linq.Dynamic.Core\src\System.Linq.Dynamic.Core\Parser\ExpressionParser.cs:line 801
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseArithmetic() in C:\Dev\GitHub\System.Linq.Dynamic.Core\src\System.Linq.Dynamic.Core\Parser\ExpressionParser.cs:line 746
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseAdditive() in C:\Dev\GitHub\System.Linq.Dynamic.Core\src\System.Linq.Dynamic.Core\Parser\ExpressionParser.cs:line 713
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseShiftOperator() in C:\Dev\GitHub\System.Linq.Dynamic.Core\src\System.Linq.Dynamic.Core\Parser\ExpressionParser.cs:line 689
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseComparisonOperator() in C:\Dev\GitHub\System.Linq.Dynamic.Core\src\System.Linq.Dynamic.Core\Parser\ExpressionParser.cs:line 477
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseLogicalAndOrOperator() in C:\Dev\GitHub\System.Linq.Dynamic.Core\src\System.Linq.Dynamic.Core\Parser\ExpressionParser.cs:line 409
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseIn() in C:\Dev\GitHub\System.Linq.Dynamic.Core\src\System.Linq.Dynamic.Core\Parser\ExpressionParser.cs:line 328
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseAndOperator() in C:\Dev\GitHub\System.Linq.Dynamic.Core\src\System.Linq.Dynamic.Core\Parser\ExpressionParser.cs:line 311
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseOrOperator() in C:\Dev\GitHub\System.Linq.Dynamic.Core\src\System.Linq.Dynamic.Core\Parser\ExpressionParser.cs:line 293
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseLambdaOperator() in C:\Dev\GitHub\System.Linq.Dynamic.Core\src\System.Linq.Dynamic.Core\Parser\ExpressionParser.cs:line 271
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseNullCoalescingOperator() in C:\Dev\GitHub\System.Linq.Dynamic.Core\src\System.Linq.Dynamic.Core\Parser\ExpressionParser.cs:line 258
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseConditionalOperator() in C:\Dev\GitHub\System.Linq.Dynamic.Core\src\System.Linq.Dynamic.Core\Parser\ExpressionParser.cs:line 242
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseNew() in C:\Dev\GitHub\System.Linq.Dynamic.Core\src\System.Linq.Dynamic.Core\Parser\ExpressionParser.cs:line 1414
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseIdentifier() in C:\Dev\GitHub\System.Linq.Dynamic.Core\src\System.Linq.Dynamic.Core\Parser\ExpressionParser.cs:line 1009
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParsePrimaryStart() in C:\Dev\GitHub\System.Linq.Dynamic.Core\src\System.Linq.Dynamic.Core\Parser\ExpressionParser.cs:line 838
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParsePrimary() in C:\Dev\GitHub\System.Linq.Dynamic.Core\src\System.Linq.Dynamic.Core\Parser\ExpressionParser.cs:line 806
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseUnary() in C:\Dev\GitHub\System.Linq.Dynamic.Core\src\System.Linq.Dynamic.Core\Parser\ExpressionParser.cs:line 801
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseArithmetic() in C:\Dev\GitHub\System.Linq.Dynamic.Core\src\System.Linq.Dynamic.Core\Parser\ExpressionParser.cs:line 746
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseAdditive() in C:\Dev\GitHub\System.Linq.Dynamic.Core\src\System.Linq.Dynamic.Core\Parser\ExpressionParser.cs:line 713
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseShiftOperator() in C:\Dev\GitHub\System.Linq.Dynamic.Core\src\System.Linq.Dynamic.Core\Parser\ExpressionParser.cs:line 689
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseComparisonOperator() in C:\Dev\GitHub\System.Linq.Dynamic.Core\src\System.Linq.Dynamic.Core\Parser\ExpressionParser.cs:line 477
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseLogicalAndOrOperator() in C:\Dev\GitHub\System.Linq.Dynamic.Core\src\System.Linq.Dynamic.Core\Parser\ExpressionParser.cs:line 409
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseIn() in C:\Dev\GitHub\System.Linq.Dynamic.Core\src\System.Linq.Dynamic.Core\Parser\ExpressionParser.cs:line 328
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseAndOperator() in C:\Dev\GitHub\System.Linq.Dynamic.Core\src\System.Linq.Dynamic.Core\Parser\ExpressionParser.cs:line 311
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseOrOperator() in C:\Dev\GitHub\System.Linq.Dynamic.Core\src\System.Linq.Dynamic.Core\Parser\ExpressionParser.cs:line 293
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseLambdaOperator() in C:\Dev\GitHub\System.Linq.Dynamic.Core\src\System.Linq.Dynamic.Core\Parser\ExpressionParser.cs:line 271
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseNullCoalescingOperator() in C:\Dev\GitHub\System.Linq.Dynamic.Core\src\System.Linq.Dynamic.Core\Parser\ExpressionParser.cs:line 258
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseConditionalOperator() in C:\Dev\GitHub\System.Linq.Dynamic.Core\src\System.Linq.Dynamic.Core\Parser\ExpressionParser.cs:line 242
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.Parse(Type resultType, Boolean createParameterCtor) in C:\Dev\GitHub\System.Linq.Dynamic.Core\src\System.Linq.Dynamic.Core\Parser\ExpressionParser.cs:line 157
   at System.Linq.Dynamic.Core.DynamicExpressionParser.ParseLambda(Type delegateType, ParsingConfig parsingConfig, Boolean createParameterCtor, ParameterExpression[] parameters, Type resultType, String expression, Object[] values) in C:\Dev\GitHub\System.Linq.Dynamic.Core\src\System.Linq.Dynamic.Core\DynamicExpressionParser.cs:line 120
   at System.Linq.Dynamic.Core.DynamicExpressionParser.ParseLambda(ParsingConfig parsingConfig, Boolean createParameterCtor, ParameterExpression[] parameters, Type resultType, String expression, Object[] values) in C:\Dev\GitHub\System.Linq.Dynamic.Core\src\System.Linq.Dynamic.Core\DynamicExpressionParser.cs:line 98
   at System.Linq.Dynamic.Core.DynamicQueryableExtensions.GroupJoin(IQueryable outer, ParsingConfig config, IEnumerable inner, String outerKeySelector, String innerKeySelector, String resultSelector, Object[] args) in C:\Dev\GitHub\System.Linq.Dynamic.Core\src\System.Linq.Dynamic.Core\DynamicQueryableExtensions.cs:line 958
   at System.Linq.Dynamic.Core.DynamicQueryableExtensions.GroupJoin(IQueryable outer, IEnumerable inner, String outerKeySelector, String innerKeySelector, String resultSelector, Object[] args) in C:\Dev\GitHub\System.Linq.Dynamic.Core\src\System.Linq.Dynamic.Core\DynamicQueryableExtensions.cs:line 973
   at Program.GroupJoinOnNullableType_RightNullable()

[StefH]

@RamanSggs
Can you please provide example code or use [dotnetfiddle?(https://dotnetfiddle.net/).