A row of the table cannot be deleted because it has a dependent in a relationship with a delete rule of RESTRICT or the deletion cascades to a row which is dependent in a relationship with a delete rule of RESTRICT.
Examine the delete rule for all dependent tables to determine the cause of the problem. The specified tables involved can be determined from the relationship name name. The specific dependent row is known by record number,number. This is the number of the row from the beginning of the table.