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Left Hand Pointer

Error Code M20

M[UMPS] by Example

Right Hand Pointer

M20, line must have formallist

Introduced in the 1995 ANSI M[UMPS] language standard.

When an extrinsic function is invoked (e.g. $$XXX^YYY(P1,P2)), and the label in the routine that is invoked to calculate the function value does not have a parameter list (in this example, the label XXX in routine YYY), this error will occur.

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Copyright © Standard Documents; 1977-2018 MUMPS Development Committee;
Copyright © Examples: 1995-2018 Ed de Moel;
Copyright © Annotations: 2003-2008 Jacquard Systems Research
Copyright © Annotations: 2008-2018 Ed de Moel.

The information in this page is NOT authoritative and subject to be modified at any moment.
Please consult the appropriate (draft) language standard for an authoritative definition.

Some specifications are "approved for inclusion in a future standard". Note that the MUMPS Development Committee cannot guarantee that such future standards will indeed be published.

This page most recently updated on 29-Nov-2011, 22:30:57 .

For comments, contact Ed de Moel (demoel@jacquardsystems.com)