z/OS Block Mode Screen Design › Validation › Attribute State Variables Validation

Attribute State Variables Validation

Validation is also a place where the attribute state variable can be reset after the procedure step executes. The procedure step does not preserve the attribute state variables used by the screen manager. As such, when verification is called, it checks to see if the attribute state variables have been reset to an indeterminate state (spaces). If this is the case, then verification synthesizes new state information for each variable during verification. The synthesized value is based on domain checks, verification, and permitted value checking, which also is checked each time verification is called with determinate state variable values.