The legend entries for one bar chart might be incorrect when you use multiple HBAR or VBAR statements with the SGPLOT procedure. The following warning message might also be issued:

WARNING: The data for a BARCHARTPARM statement are not appropriate. The BARCHARTPARM statement expects summarized data.
The bar chart might not be drawn correctly.

The problem occurs when each of the HBAR or VBAR statements references a different group variable with the GROUP= option.

The correct behavior should be to issue the following error message and not produce a chart:

ERROR: The same group variable must be used for summarized plots.

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