Procedure to correct mistakes in i-797 approval notice

[bekugc]

we had applied for my 7th year H1-b extension in March 2006, and i got
the approval on May 19 2006. 7th year extn is based on fact that my NY RIR
labor is pending since Dec 2002 ( now in Backlogcenter)

But it appears there is a mistake in the approval, and instead of giving me extension upto May 2007, they have given extension to May 2006.

Does anyone know what is the procedure to kick off some kind of "correction"
for this mistake.

thx,
nav

[long_long_wait]

me too

bekugc,

The same happened to my application also. Instead of feb2009, the approval was given till feb2008.

What did you do to correct this?

long_long_wait