One of the following error messages might be issued when a SAS/GRAPH procedure attempts to process a data set that contains a variable with all missing values:

ERROR: Chart contains no valid response values.

ERROR: There is no valid data for the bottom horizontal axis labeled
[variable name]. The graph was not produced.

ERROR: There are no valid observations. Could be caused by SUMVAR= or FREQ=
variable.

ERROR: Every observation has a value missing.

Each SAS/GRAPH procedure might generate a different error message. With all procedures, the error message should be a warning message.

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