Subject Re: IndexError From Ken Mayer <dbase@nospam.goldenstag.net> Date Thu, 10 Jun 2021 20:52:53 -0700 Newsgroups dbase.getting-started On 6/10/2021 8:04 PM, AGOSTINHO wrote: > Dear Mervyn, > I'm trying to create  a simple new index with the indexname M_INDEX from a DBF file I created in DBASE DOS V5. (SEE ATTACHED FILE) for results. > > Also when I try from the command window I get the same error > Use Alesie Excl > Index on merk tag m_merk >   (DATA ENGINE ERROR: Invalid Parameter) > Thanks How large is the field? If it is greater than 100 characters that will cause problems ... you would need to use left( merk, 100 ) for the index expression: index on left( merk, 100 ) tag m_merk Ken -- *Ken Mayer* Ken's dBASE Page: http://www.goldenstag.net/dbase The dUFLP: http://www.goldenstag.net/dbase/index.htm#duflp dBASE Books: http://www.goldenstag.net/dbase/Books/dBASEBooks.htm dBASE Tutorial: http://www.goldenstag.net/dbase/Tutorial/00_Preface.htm dBASE Web Tutorial: http://www.goldenstag.net/dbase/WebTutorial/00_Menu.htm