Modifying SAP standard tables via an Open SQL statement can result in data corruption and unexpected behavior. This is because a direct modification bypasses all validation mechanisms.
Instead, the use of standard functions or SAP Business Add-Ins (BAdIs) is recommended.
This rule raises an issue on Open SQL statements ``++INSERT++``, ``++UPDATE++``,``++MODIFY++``, or ``++SELECT ... FOR UPDATE++`` which target an SAP table, i.e. a table with a name starting with a character between "A" and "X", case insensitive.
== Noncompliant Code Example
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SELECT my_col FROM my_system_table WHERE my_id = 123 FOR UPDATE. " Noncompliant
SELECT my_col FROM z_custom_table WHERE my_id = 123 FOR UPDATE. " Ignored; modifies a custom table
