EXTFLD(field) as a subfield under an externally described data structure

 
 
 
I have an externally described data structure and need to rename a few of
its fields.

in the manual it says " 

EXTFLD(field_name)
The EXTFLD keyword is used to rename a subfield in an externally described
data structure. Enter the external name of the subfield as the parameter to
the EXTFLD keyword, and specify the name to be used in the program in the
Name field (positions 7-21). "
but when I try it the syntax checker responds with "Message . . . . :  
Keyword is not allowed for a parameter definition; keyword  is ignored."

The code is:
D S2LOCT1RecDS  E DS           ExtName(BLPLOCT1) Prefix(S2)
D   S2L1SWRBAS                        ExtFld(SWRBASE)

What am I missing here?

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Booth Martin http://www.MartinVT.com
Booth@xxxxxxxxxxxx
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