Segments are not numbered sequentially

What causes this issue?

The segments transferred are not numbered consecutively.
Segment &v1& has the number &v2&. But it is segment number &v3&.

System Response

Processing cannot be continued, because otherwise inconsistent data
could be produced.

How to fix this error?

The table of segment entries must be completed correctly.

Error message extract from SAP system. Copyright SAP SE.