Monitoring the maximum rows in a partition is important because SAP HANA has a hard limit of approximately 2.1 billion rows per partition (2^31 rows). If a partition reaches this limit, inserts and updates will fail with SQL error 2055: "maximum number of rows per table or partition reached." This limit cannot be increased, so large tables must be repartitioned before they approach the maximum.
Use the following screenshot as a template for creating the alert and use the attached query in the SQL Statement field: