Inconsistency in segment structure table, segment '&1', field '&2'

What causes this issue?

The calculated length of the data element '&v3&' does not agree with
the length in the table of the structure of the segment.
This may have been caused by a change in the data element.

System Response

Using this segment in IDoc processing can lead to loss of data in the
interface.

How to fix this error?

Please check the change dates of the data element '&v3&' or that of the
underlying domain in the ABAP Repository and compare these with the
last change date of the IDoc segment '&v1&'.

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