I got the I-140 approval. I had not filed the I-485 concurrently with I-140. 

The I-797C is written like this 

Notice Type: Approval Notice 
Section: Mem of Profession w/ Adv Degree, or Exceptn'l Ability Sec. 203 (b)(2) 

The above petition has been approved. The petition indicates that the person for whom you are petitioning is in the United States and will apply for adjustment of status. The information submitted with the petition shows that the person for whom you are petitioning is not eligible to file an adjustment of status application at this time. 

What does this mean? Does anybody have same situation before?

Any help or suggestions will be highly appreciated. 

Thanks