Field overflow (&) (leave out line <& &>)
Message type: E = Error
Message class: M8 - Invoice Verification/Valuation
Message number: 102
Message text: Field overflow (&) (leave out line <& &>)
What causes this issue?
When calculating, the system encounters numbers that are so large
that it is not possible to represent them in the display fields.
How to fix this error?
Check whether or not you have entered numbers that are too large: if
you have, change your input.
If the invoice actually contains such large figures, you must split
the invoice up and enter it as two (or more) documents.
Error message extract from SAP system. Copyright SAP SE.