Error While creating extension

[Harpreet_Singh2]

I am getting below error while creating an extension. Please suggest what could be reason behind it and how to resolve it.

No extension package was found on the server with the name eloqua-adobe-by-enautics-macu and development availability.

[Parvesh_Parmar]

Hello @Harpreet_Singh2 , 

Can you please confirm if this question is related to Adobe Experience Platform (AEP)?

If yes, could you please elaborate a bit more on your question — for example, where exactly are you getting this error, what steps you're performing, and what your use case is?

Kind regards,
Parvesh