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Amazon error 90193: One value must be lower than another

This explanation also covers: 90000596

What does it mean?

For example the item dimensions against the package dimensions, or the cost against the list price.

How to fix it

Correct the two values so that the first is lower than the second.

Where do you fix it?

More on this subject

Source

Summarised in our own words; Amazon's page is leading.