Moving Global Variables Module results in "Compile error: Ambiguous name detected~ (1 Viewer)

Moving Global Variables Module results in "Compile error: Ambiguous name detected~

I'm working on a friend's database that makes use of several common functions contained in a separate database.
There are a few seemingly irrelevant objects such as a few tables, a few reports, a single form.
The “meat” is contained in several modules.
This functions in these modules of the separate database are accessible by a reference to it in the working databases reference list.

The original database was a MDE but the retired developer has provided me with an non-compiled version so I can assist my friend with some upgrades and changes.
I have changed the reference from the old MDE to the replacement MDB.

I have been successful at migrating several of the functions from the reference source to the working database.
My successful process has been:
1. Create a new module in the working database
2. Paste function in the new module
3. Remove the function from the module in the original referenced source

However, there is a module in the original referenced source that is called “GlobalVars”.
This does not contain any actual functions, just a bunch of variable definitions.

I have followed the above steps with this “GlobalVars” module.

However, when I open the working database, I get the error:

Compile error:
Ambiguous name detected~

Click to expand...

After I clear the error, a Form_Open function is highlighted in yellow with a variable “aScreenSize” highlighted in blue.
I have checked, and the aScreenSize variable is contained in the list of global variables.

Any ideas how to eliminate the error?

Re: Moving Global Variables Module results in "Compile error: Ambiguous name detected

Somewhere within the program there is the same variable being declared in the same scope. Just do an EDIT > FIND and look for that same variable name in ENTIRE PROJECT and you should be able to find the duplicate and delete it.