Hello gorleepolder,
Thanks for using Apple Support Communities! I see you have a question about updating some apps, and I'd like to do what I can to help out.
With the error message you received, this means that a different Apple ID originally purchased or downloaded (if a free app) the app. Your current Apple ID that you're signed in with is not what is shown as the original user.
You can check your purchase history: See your purchase history for the App Store or iTunes Store
Apple ID content can not be merged between different Apple IDs. However, you can delete the app and download again with your current Apple ID.
If you sign in with the other Apple ID, you may not be able to sign back in with your current Apple ID for 90 days, as shown in this article: View and remove your associated devices for purchases, look in the section titled "More about associated devices".
Take care!