This blog describes the steps required for accessing multiple APIs using a same API package plan keys in detail. Follow the below steps to access multiple APIs with single API plan keys.
Step1: First you need to Create two API definitions.
Make sure you use everyone in interactive documentation access control for both API definitions.
Step 2: Create One API package and Plan now.
Step 3: Now, Assign the API to this API package Plan
Step 4: After assigning, Generate IO doc for the both APIs.
Note: Now you need to go to developer portal.
Step 5: Generate the application key to access the API.
Step 6: Go to interactive API tab in home page and then select interactive document and test.
Now the second API is also accessed with the same API package plan key.
Thus, the above steps shows that we can successfully access 2 APIs with the help of same API package plan key.