Unable to import family because of "shared parameters conflict"

[Anonymous]

When trying to import a family that I downloaded, I get the following message:

The shared parameter "049391e0-c9b7-4d13-bcfb-84c309686c1f" cannot be added with name "Nominal width" and type "Length" because it conflicts with the existing name "Nominal width" and type "Number".
The shared parameter "2ec69171-2ed7-43a5-bee7-c504ed385854" cannot be added with name "Weight Net (Kg)" and type "Text" because it conflicts with the existing name "Weight Net (Kg)" and type "Number".
The shared parameter "51ba8e78-a45c-4491-97da-88159bcf2c4a" cannot be added with name "Nominal height" and type "Length" because it conflicts with the existing name "Nominal height" and type "Number".

How do I fix this?

The family has the 3 parameters mentioned above, all as "number" type. 

My project had the parameters twice, once as Number and once as Lenght/ Text.. 

I deleted the three parameters that were not "Number" type  in my project, still has a conflict. I tried deleting them all, still conflict and unable to import. 

[barthbradley]

 You've got shared parameters that share the same GUID.  You need to correct through the families themselves.  Cannot be corrected through the Project.  

[Anonymous]

Yes. However, when I go to the family, it's a nested family and there's one within, and I can't edit the parameters.

It's the In-Wash Wall Hung Toilet by Roca 

[Anonymous]

You can edit an nested family too then load it back in.

[bentbrandt]

I have the same issue.

It persists even after deleting all parameters in the family and imbedded family.

[FAIR59 · Accepted solution]

removing parameters in the family-parameter dialog, doesn't remove them from the database. There remains a SharedParameterElement in the document. To remove those, you have to find the ids of the SharedParameterElements for the parameters you want to delete . See my answer to this discussion https://forums.autodesk.com/t5/revit-architecture-forum/how-to-delete-shared-project-parameter-from-...

[bentbrandt]

Thank you Fair59.
It seems as if it's time for me to learn how to use Dynamo 😉

[LuciaSchneider]

You can go to the Family Parameters window (in the family you are trying to insert) and delete all the parameters that your error message said are duplicated. Then insert the family into your project.

[martijn_pater]

You should be able to reassociate all (nested) parameters to new/other shared parameters.

...or otherwise remove also the parameters for all nested families, save as under different name and load into project.

[bentbrandt]

I have observed that language selections can make these errors occur.
I had a project made in english, metric template and tried to insert a family from a manufaturer with german text and property names. Properties like weight and mass failed and I could not find or remove those. Then I tried with a family ,from the same company, with english text -then I could locate the property fields and delete the conflicting ones.