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How to work around best practice error: "A form that is not associated with other forms should be linked to at least one menu item"

How does one work around the Best practice error: "A form that is not associated with other forms should be linked to at least one menu item", when developing a custom lookup form ?

Developing a possibility of a custom setup on the table ReqSitePolicy, that allows for calculation of "External Invent Onhand level", I added two new extended data types:

ItemSearchInventSiteId exending InventSiteId
ItemSearchInventLocationId extending InventLocationId

and three new fields:

ItemSearchShowAvailInventDataAreaId based on EDT SelectableDataArea
ItemSearchShowAvailInventSiteId based on EDT ItemSearchInventSiteId
ItemSearchShowAvailInventLocationId (based on a EDT ItemSearchInventLocationId)

to the ReqSitePolicy table.

To be able to make lookups for ItemSearchShowAvailInventSiteId and ItemSearchShowAvailInventLocationId fields based on the legal entity chosen in the ItemSearchShowAvailInventDataAreaId field (even though the currently active legal entity might be something else), I prepared two custom lookup forms for the EDTs ItemSearchInventSiteId and ItemSearchInventLocationId. The querys of the custom lookup forms have the property CrossCompanyAutoQuery set to YES.

The custom lookup forms uses the legal entity chosen in the ItemSearchShowAvailInventDataAreaId to make a crosscomapny lookup for InventSiteId and InventLocationId, clearing dynalinks and doing:

this.query().addCompanyRange(dataAreaIdCriteria);

in the executeQuery-method of the datasource of the lookup form.

However compiling the lookup forms resulted in the best practice error: "A form that is not associated with other forms should be linked to at least one menu item".

Well, to solve that problem open the lookupform in the - AOT-path:

Form / "custom lookup form name" / Designs / Design.
Set the "Style" property to "Lookup".

And poof the Best Practice error has gone away.
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