What is the SAP recommended naming convention for append structures of standard SAP tables?

The recommended naming convention for append structures of standard SAP tables stipulates that the name of the append structure must start with ZZ or YY. This guideline helps ensure that custom developments are clearly distinguished from standard SAP objects, facilitating better management and understanding within the SAP landscape.

When a name begins with ZZ or YY, it indicates customization, signaling to developers and administrators that these are non-standard additions. This differentiation is crucial when upgrades or patches are applied, allowing for easy identification and maintenance of custom code without interfering with the core SAP delivery.

In terms of the other options: starting with ZA suggests a naming convention that does not align with SAP's guidelines for customization, while using Z or Y for component names is not strictly mandated, as the emphasis is on the naming of the append structure itself. Thus, following the convention of starting append structure names with ZZ or YY is essential for ensuring clarity and maintaining best practices in SAP development.