'OnOpenPage' is not a valid trigger on card page

(0) Share

Report

Posted on by ERPlatanos

Hello all,

I am following along with Microsoft's Learning Module, "Introduction to the basics of AL programming in Dynamics 365 Business Central" and on the Exercise page. It is simply creating a card page of data types.

Here is the link

I've run into an error following this page exactly.

I'm having trouble finding any solid documentation to understand why this issue is occurring.

Question 2) Are there any better resources to learn AL than Microsoft's documentation? I'm finding their content to be lackluster. I follow these step-by-step guides, only to run into seemingly basic errors.

I have the same question (0)

All responses (6)

Answers (1)

Suggested answer

DAnny3211 11,397 on at

Like (0)

Report

hi

I think microsoft's documentation is very good

but you could also look for videos on you tube that can help you

for example triggers in a page should be inserted after the layout

check my answer if it helped you, thanks

DAniele

Was this reply helpful? Yes No
ERPlatanos 73 on at

Like (0)

Report

Daniele,

The trigger is in the action section after the layout section.

Was this reply helpful? Yes No
Verified answer

Teddy Herryanto (Th... 14,284 Super User 2025 Season 2 on at

Like (1)

Report

OnOpenPage is not part of the action. It is part of the page itself.

Put it after the actions {}, not inside one of the action.

layout

{

}

actions

{

}

trigger OnOpenPage

begin

end;

Was this reply helpful? Yes No
Suggested answer

DAnny3211 11,397 on at

Like (0)

Report

noooo...at the end!

DAniele

Was this reply helpful? Yes No
Suggested answer

DAnny3211 11,397 on at

Like (0)

Report

noooo...at the end!

DAniele

Was this reply helpful? Yes No
Suggested answer

YUN ZHU 95,739 Super User 2025 Season 2 on at

Like (0)

Report

Hi, just adding some info.

You can use AL Snippets to support your coding.

https://yzhums.com/2844/

Hope this helps.

Thanks.

ZHU

Was this reply helpful? Yes No