Subscribe to get Latest Updates in Your e-mail FREE: CLICK HERE TO SUBSCRIBE!

NYSC Call-Up Letter Printing “Parameter Is Not Valid” Error

A lot of prospective corps members are getting “Parameter is not Valid” error while attempting to print their NYSC call-up letters for Batch A 2016 orientation programme. A lot of people have called and sent messages to ask what could be the cause of that.

I have gone to several online forums and social media platforms where many have attracted this error to network issues. I seriously doubt that since prospective corps members could log in to the NYSC portal and do other things than print call-up letters.

What Could Be The Cause of “Parameter is not Valid” Error?

The only plausible explanation for getting the “Parameter is not Valid” while trying to print your NYSC call up letter on NYSC website is that it has not been uploaded. We informed you in this post that printing of call-up letters will take place between Wednesday, 20th and  Wednesday, 27th April, 2016.


I believe that the call-up letters are being uploaded in batches and those getting the error are those whose letters have not been uploaded. You can check the NYSC portal back later.

This post is meant to just put your mind at ease that you are not the only one getting this error. There are so many people out there experiencing this too.

UPDATE: Some of those that got the error messages have now seen their letter. Just keep checking.

Still need the procedure to follow in order to print your Call up letter, click here now.

JOIN NGScholars on Telegram for Instant Updates.

If you find this post useful, please share on Facebook, Twitter, WhatsApp, etc. using the buttons below. It will definitely help someone out there.
Share on Facebook
Tweet about this on Twitter
Share on LinkedIn
Email this to someone

Do you want to ask any question or comment this post? Ask and get very fast answers on NGScholars Ask! CLICK HERE to go to the forum! . Click on Login and login with Facebbok

Don't want to miss an update?

Join over 143,000 Facebook Followers | Join over 29,000 Twitter Followers | Join over 26,000 Email Subscribers

Do you want to ask any question about this post? Ask and get very fast answers on NGScholars Ask!CLICK HERE to go to the forum! . Click on Login and login with Facebbok.


  1. Ismael April 20, 2016
  2. If April 21, 2016
    • mcmedal001 April 30, 2016
  3. Sehindemi Shola Olaolu April 21, 2016

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.