IV Estimation successes in STATA but not in SAS

[Golf]

Hello,

   I have a single equation, where lwage is the dependent variable,  there are 15 independent variables and one of them (educ) is an endogenous varaibles.   A exogenous variable, nearc4, is used as the instrumental variable.   I use the following procedure in SAS and get the error message.

Here is the results.

Can you help me out from the problem?   I apply the same data set to STATA, and I can get the result without problems.

Thank You.

[PaigeMiller]

The WARNING message seems clear to me.

WARNING: The variable nearc4 is not defined in the program

[Golf]

Dear Miller,
How to make nearc4 defined in the program. (I understanded that nearc4 was already defined in the INSTRUMENT statement)
Thank You,

[PaigeMiller · Accepted solution]

What is NEARC4? Where would SAS find it?

Is it a variable in your input data set, or something computed? Obviously, it is neither, and so SAS doesn't know how to use NEARC4.

[Golf]

Dear Miller,
You are right. nearc4 is in another data file. I used the wrong data set.
Thank You for your time.
Bests,