Definitions

SAS performs error processing during both the compilation and the execution phases of SAS processing. You can debug SAS programs by understanding processing messages in the SAS log and then fixing your code. You can use the DATA Step Debugger to detect logic errors in a DATA step during execution.

SAS recognizes five types of errors.

This type of error ... occurs when ... and is detected at ...

syntax programming statements do not conform to the rules of the SAS language compile time

semantic the language element is correct, but the element may not be valid for a particular usage compile time

execution-time SAS attempts to execute a program and execution fails execution time

data data values are invalid execution time

macro-related you use the macro facility incorrectly macro compile time or execution time, DATA or PROC step compile time or execution time

This type of error ...	occurs when ...	and is detected at ...
syntax	programming statements do not conform to the rules of the SAS language	compile time
semantic	the language element is correct, but the element may not be valid for a particular usage	compile time
execution-time	SAS attempts to execute a program and execution fails	execution time
data	data values are invalid	execution time
macro-related	you use the macro facility incorrectly	macro compile time or execution time, DATA or PROC step compile time or execution time

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