When we have errors in the compilation, and we cannot identify them easily, one of the possibilities is to activate Show generation errors in Tools> Options> Pattern as shown in the images below.
![ShowGenerationErrorsImg02](/com.wiki.apgetwikiimage?4028,2)
![ShowGenerationErrorsImg01](/com.wiki.apgetwikiimage?4026,3)
When we activate this option, we do Apply Pattern Instance within the instance that is generating the error, with this the exact line will be specified.
![ShowGenerationErrorsImg03](/com.wiki.apgetwikiimage?4029,2)
If an error is found when applying, a confirmation panel will be shown. If we press 'Yes' the panel will open as Read-Only in the line that contains the error.
![ShowGenerationErrorsImg04](/com.wiki.apgetwikiimage?4030,2)
- As of GeneXus 17 U3, the Web Panels that are not part of a transaction are specified.
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