6.0x covers a lot of ground. The final PC-DOS release was 6.04, the latest MVS release is 6.08. My Proc Guide says indexes became available in 6.06. Allow me to assume at least 6.06. Allow me the totally unjustifiable assumption that you are using PROC DATASETS (it is also possible to create an index during a data step, and you can use MODIFY in a data step, and I hope that is not what you are doing). Given all of that, did you code LIBRARY= on the PROC DATASETS statement, selecting the correct library? Does the MODIFY statement specify a single level name (a dataset in the library selected on the PROC statement)? Does the variable you are trying to index exist--it should if this is to be a simple (one variable) index?

Tim Berryhill - Contract Programmer and General Wizard TWB2@PGE.COM Frequently at Pacific Gas & Electric Co., San Francisco The correlation coefficient between their views and my postings is slightly less than 0 ----------------------[Reply - Original Message]----------------------

Sent by:"Donald R. Ploch" <ploch@UTKUX.UTCC.UTK.EDU> I'm trying to create an INDEX to use with a BY expression. I use the code: MODIFY datasetname; INDEX CREATE variable; I can't seem to satisfy the SAS system with the datasetname. The 6.0 manual is no help. I'm using SAS on a UNIX system, version is 6.0x.

Don Ploch, U of Tennessee

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