Adding multiple content types with same columns - Known Issue

Two known issue regarding content types :



1 ) If you are adding multiple sealed site content types to list and check content type properties from view you will see same default content type attached to every document.It is known issue with sharepoint because it will not recognised new content type template at time of attaching content types and always recognize default sealed content type

Resolution : if you are doing it using object model then unseal the site content type first and then add it to list . Dont forget to sealed it back at site level.

2) If all sealed content types having same columns then it will be failed again at time of adding all content types at same time to list(in both cases : GUI and object model)

Resolution : Add only one content type first to list and then add rest all content types in second time. It will solve the purpose