Getting Pattern error while trying to adding Tab Page control on Newly Created Extension

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Posted on by Sheikh Sohail

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Hi All

I am getting design pattern error while trying to adding New Tab page on newly created Extension of purchase agreement form. can someone please help me to figure out what and where i am doing wrong. i have new update-8 VM and nothing is customized

i am getting below error while compiling

Path: [AxFormExtension/PurchAgreement.Extension/Design/Controls/MainTab/TabPageDetails/DetailsTab/LineView/TabLineView]:Control 'AxFormExtension/PurchAgreement.Extension/Design/Controls/MainTab/TabPageDetails/DetailsTab/LineView/TabLineView' has child 'LineViewLineDetails' which is not allowed at its current location by pattern 'Details Transaction'. ConflictResolutions (VAR) [Conflict] C:\AOSService\PackagesLocalDirectory\Conflict\Conflict\AxFormExtension\PurchAgreement.Extension.xml 0

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Sohaib Cheema 49,664 Super User 2026 Season 1 on at

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On your personal request I have reproduced issue and I found that you are simply violating form pattern. You cannot go out of way when form patter has been set already to 'Details Transaction'

the location where you added form control is not allowed to do, as this violates form pattern. please have a look at next image.

Have a look at next image, when I added control at another location, it accepted. Simply because that did not violated pattern.

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Shahrukh 501 on at

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Hi Sohaib,

I am facing the same issue on SalesTable form. And what you are saying is that we cannot add another tab page in this pattern. Mean number of tabs pages are fixed = 3, and we cannot add 4th one? But we did this in AX 2012 and D365 update 3 as well. It was working there. Now we are trying to move it to update 8 and it is giving error. So is there any work around for doing this?

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Sohaib Cheema 49,664 Super User 2026 Season 1 on at

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Yes Right.

You can add new tabs at certain places whereas on certain places you cannot add new tabs or any kind of controls.

No one asking to limit number of tabs to 3 only. But you cannot destroy pattern.

This is simply in-line with Microsoft defined patterns. Microsoft takes responsibility to display your application(D365) seamlessly, cross-platform, whether you open on browser, tablet or phone.

If you got any further doubts, reaching Microsoft via support channel can be helpful.

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fajar 3,805 on at

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Hi Sohaib,

i try added new control like your picture.
i added control in LineViewLineDetails (TabPage)

but i get error...

Error Path: [AxFormExtension/PurchAgreement.Extension/Design/Controls/MainTab/TabPageDetails/DetailsTab/LineView/TabLineView/LineViewLineDetails]:Control 'AxFormExtension/PurchAgreement.Extension/Design/Controls/MainTab/TabPageDetails/DetailsTab/LineView/TabLineView/LineViewLineDetails' has child 'FormTabControl1' which is not allowed at its current location by pattern 'Details Transaction'.

please help.

can i add new control in this form?

thanks.

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nmaenpaa 101,172 Moderator on at

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I think you can nowadays (since PU20) change the pattern of the form to Custom using extensions.

docs.microsoft.com/.../platform-extensibility

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fajar 3,805 on at

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yes...

thanks Nikolaos..

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