# INVALID TYPE DESCRIPTOR, error 75

**URL:** <https://clarionhub.com/t/invalid-type-descriptor-error-75/8588>\
**Category:** questions\
**Tags:** errorcodes\
**Created:** [September 10, 2025, 4:47pm UTC](https://clarionhub.com/t/invalid-type-descriptor-error-75/8588 "2025-09-10T16:47:50Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Marcelo\_Sanseau](https://clarionhub.com/user_avatar/clarionhub.com/marcelo_sanseau/32/2929_2.png) [@Marcelo\_Sanseau](https://clarionhub.com/u/Marcelo_Sanseau)\
**Post date:** [September 10, 2025, 4:47pm UTC](https://clarionhub.com/t/invalid-type-descriptor-error-75/8588/1 "2025-09-10T16:47:50Z")

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I have a sort that gives this error 75, but I can not find information about it, neither find a cause for the error. Anybody have more information ?

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**Author:** ![CarlBarnes](https://clarionhub.com/user_avatar/clarionhub.com/carlbarnes/32/1859_2.png) [@CarlBarnes](https://clarionhub.com/u/CarlBarnes)\
**Post date:** [September 10, 2025, 5:43pm UTC](https://clarionhub.com/t/invalid-type-descriptor-error-75/8588/2 "2025-09-10T17:43:13Z")

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> [@Marcelo\_Sanseau](#):
>
> I have a sort

Can you show your “sort” code?

Like are you doing a SORT(Q) ?

I think I have run into that error when there is a DIM() field in a Q used in a From(Q) .

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<div class="post-metadata">

**Author:** ![Marcelo\_Sanseau](https://clarionhub.com/user_avatar/clarionhub.com/marcelo_sanseau/32/2929_2.png) [@Marcelo\_Sanseau](https://clarionhub.com/u/Marcelo_Sanseau)\
**Post date:** [September 10, 2025, 9:13pm UTC](https://clarionhub.com/t/invalid-type-descriptor-error-75/8588/3 "2025-09-10T21:13:03Z")

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solved!!  
The problem was that the compiler sometimes get confused when you use groups overlapping other structures. Using the canonical form solve the problem.  
Someday I will analyze the generated code to see what happens exactly.  
thanks for your post.