Solved
the ID number has numbers and letters, but no hyphens or dashes
Is this Utah by any chance? If so, the Utah employer's state withholding ID has to be 14 characters consisting of 11 digits plus the 3 letters wth in lower case and no hyphens. Example 12345678901wth
Again, be sure to use lower case for the wth.
It has to be that way on all W-2's and 1099's that have Utah withholding. For mineral payments with Utah withholding the last 3 letters should be wmp.
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