# Message = Argument 'Index' is not a valid value. ParamName =

**URL:** <https://forum.radsystems.io/t/message-argument-index-is-not-a-valid-value-paramname/1464>\
**Category:** PHPRad Classic\
**Created:** [March 22, 2023, 9:29pm UTC](https://forum.radsystems.io/t/message-argument-index-is-not-a-valid-value-paramname/1464 "2023-03-22T21:29:11Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![mohammad](https://forum.radsystems.io/letter_avatar_proxy/v4/letter/m/e274bd/32.png) [@mohammad](https://forum.radsystems.io/u/mohammad)\
**Post date:** [March 22, 2023, 9:29pm UTC](https://forum.radsystems.io/t/message-argument-index-is-not-a-valid-value-paramname/1464/1 "2023-03-22T21:29:12Z")

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## what does this error mean? Message = Argument ‘Index’ is not a valid value. ParamName = Data = System.Collections.ListDictionaryInternal InnerException = TargetSite = System.Object get\_Item(System.String) StackTrace = at Microsoft.VisualBasic.Collection.get\_Item(String Key) at RadSystems.PHPRadClassicLaravelEngine.BuildMasterDetailBtn(RecordDetailRelation rd) at RadSystems.PHPRadClassicLaravelEngine.GenerateViewCode(ActionPage& page) HelpLink = Source = Microsoft.VisualBasic HResult = -2147024809

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**Author:** ![willvin](https://forum.radsystems.io/user_avatar/forum.radsystems.io/willvin/32/7_2.png) [@willvin](https://forum.radsystems.io/u/willvin)\
**Post date:** [March 22, 2023, 10:14pm UTC](https://forum.radsystems.io/t/message-argument-index-is-not-a-valid-value-paramname/1464/2 "2023-03-22T22:14:22Z")

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What was the configuration you did before getting this error?

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**Author:** ![mohammad](https://forum.radsystems.io/letter_avatar_proxy/v4/letter/m/e274bd/32.png) [@mohammad](https://forum.radsystems.io/u/mohammad)\
**Post date:** [March 22, 2023, 10:31pm UTC](https://forum.radsystems.io/t/message-argument-index-is-not-a-valid-value-paramname/1464/3 "2023-03-22T22:31:11Z")

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I think nothing just make table join

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**Author:** ![willvin](https://forum.radsystems.io/user_avatar/forum.radsystems.io/willvin/32/7_2.png) [@willvin](https://forum.radsystems.io/u/willvin)\
**Post date:** [March 23, 2023, 12:45pm UTC](https://forum.radsystems.io/t/message-argument-index-is-not-a-valid-value-paramname/1464/4 "2023-03-23T12:45:33Z")

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I just checked that no such error. this happens sometimes when you do an incomplete configuration and click on an okay button or publish button.