Error: Web Dynpro Generation: Metadata constraint of Component <MyComponent> is violated: ViewElementAggregation

[Former Member]

Hi everyone!

I'm using SAP NetWeaver 7.3 SP04 PAT0004 and while building the project i am facing problem with below error: 

Web Dynpro Generation: Metadata constraint of Component AsigComp is violated: ViewElementAggregation "//WebDynpro/View:com.xxxx.yyyy.comp.name.NamesExtensions/RootUIElementContainer/Child:GroupTable/Child:TableMyExtensions/OutgoingAggregation:GroupedColumns", Role "Definition": A minimum of 1 object(s) is required.

I have imported a project from a lower release into my NWDS.

Can anyone please help? Thanks in advance!

[Former Member]

Please,

Can somebody give me a hint?

Thanks!