Error: Can't move the objects. The requested transformation would make some objects fall completely off the drawing area.

writes4fun  wrote 4. I check to make sure no anchor points are on the edge of the artboard

Anchor points on the edge of the artboard would not be an issue. Zoom all the way out and look for stray points on the edge of the drawing area. (Often, selecting and deleting a guide will leave the two end points, and those can cause this problem when you use Select All)

Try changing X and Y coordinate values using the transform panel instead. It worked for me.

just release or clear guides!!!

Zoom way out so you can see the drawing area and then Select All

In this example, the white area is a letter-size artboard. In the upper left of the drawing area, a small pen point got selected. If I am only looking at my document and not the drawing area, I will  get the same alert when I move my artwork.

writes4fun schrieb: 3. Forum says to Clear Guides. I check and Clear Guides is grayed out.

Are there guides? Did you create any guides?

writes,

If no brighter suggestions appear, you may try what is still untried on the list below, skip 5) in this case.

If things that should work simply refuse to (all possibilities exhausted (and carefully making sure you are performing (all) the needed things)), you may try the list below.

Sometimes, (certain) things may fail or stop working for no apparent reason. When the (other) possible reasons/cures fail to work, it may be some kind of (temporay or permanent) corruption, or even some inconvenient preference setting(s), which may be cured with something on the following list set up in an attempt to provide a catchall solution for otherwise unsolvable cases. It starts with a few easy and harmless suggestions 1) and 2) for milder cases, and goes on with two alternative ways 3) and 4) of resetting preferences to the defaults (easily but irreversibly and more laboriously but more thoroughly and also reversibly), then follows a list 5) of various other possibilities, and it ends with a full reinstallation 6). If no other suggestions work, or if no other suggestions appear, you may start on the list and decide how far to go and/or which may be relevant.

The following is a general list of things you may try when

A) The issue is not in a specific file,

B) You have a printer correctly installed, connected, and turned on if it is physical printer (you may use Adobe PDF/Acrobat Distiller as the default printer with no need to have a printer turned on, obviously you will need to specify when you actually need to print on paper), and

C) It is not caused by issues with opening a file from external media (see at the bottom).

You may have tried/done some of them already; 1) and 2) are the easy ones for temporary strangenesses, and 3) and 4) are specifically aimed at possibly corrupt/inconvenient preferences); 5) is a list in itself, and 6) is the last resort.

If possible/applicable, you should save current artwork first, of course.

1) Close down Illy and open again;

2) Restart the computer (you may do that up to at least 5 times);

3) Close down Illy and press Ctrl+Alt+Shift/Cmd+Option+Shift during startup (easy but irreversible);

4) Move the folder (follow the link with that name) with Illy closed (more tedious but also more thorough and reversible), for CS3 - CC you may find the folder here:

https://helpx.adobe.com/illustrator/kb/preference-file-location-illustrator.html

5) Look through and try out the relevant among the Other options (follow the link with that name, Item 7) is a list of usual suspects among other applications that may disturb and confuse Illy, Item 15) applies to CC, CS6, and maybe CS5);

Even more seriously (this may be serious because you may need to restore plugins and whatnot afterwards if you have customized things), you may:

6) A) Uninstall (ticking the box to delete the preferences if applicable), B) run the Cleaner Tool (if you have CS3/CS4/CS5/CS6/CC), and C) reinstall. You may try without step B), but sometimes it is needed, because otherwise things may linger.

To uninstall:

https://www.adobe.com/cfusion/search/index.cfm?loc=en_us&term=uninstall&cat=support&product=illustrator&self=1

Cleaner Tool:

http://www.adobe.com/support/contact/cscleanertool.html

Hmm, that's strange. Although you tested there ar no points on the edge of the document, can you try this?

1) Go to Select > Object > Stray Points (Illustrator now selects every 'loose/stray' anchor point).

2) Just hit Delete after that (to delete the open, loose points).

Maybe that would be the problem?