Duplicates found in internal structures of the program

What causes this issue?

There are duplicates within the internal structures of the function
module. This will either result into "duplicate key" errors during the
insertion or unintended behavior during updates on the database.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Check the input tables "IT_RFM_PROD_SEA" and "IT_RFM_PROD_SEAX".
following cases should not occur:
,,-->Having more than one insert for one season-product combination
,,-->Having more than one delete for one season-product combination
-->Having more than one update for one season-product combination
-->Having an insert for a season which is to be deleted (and vice versa)
-->Having an insert for a season which is to be updated (and vice versa)
-->Having a delete for a season which is to be updated (and vice versa)
-->Having a delete for a season which is to be inserted (and vice versa)
It may be the case that it is not obvious, which operation causes the
error. This is due to the fact, that the internal handling of the input
may differ from what you specified within your X-Structure. This is
particularly the case, when the actual season information is updated
(update on field fsh_season / fsh_collection / fsh_theme). Since these
fields are key fields of table FSH_SEASONS_MAT, we need to generate
"Insert" and "Delete" records internally. This, inter alia, may result
in unexpected entries within internally used tables.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.