Mapping Services Facility › Type Description and Formats › BOOLEAN Type › Local Form and Behavior

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Local Form and Behavior

Internally, Mapping Services stores a value of X’00’ for false, and X’01’ for true (and accepts any value other than X’00’ as true).

For an input operation, where the component is variable length its length is always set to 1. Where the component length is fixed and is greater than 1 the value occupies the first byte only (it is left aligned) and the remainder of the component’s data is set to zeros.

For an output operation, where the component is located and has a length greater than 1, only the first byte is inspected as the value.