Question

congratulations are in order

what does that mean?

Answer 1

It means that you've done very well & therefore it would be appropriate to congratulate you. 

Answer 2

تبریک سر جاشه.

Answer 3

be in order : to be a suitable thing to do or say on a particular occasion (Longman)

 

example in context :

Now that you're a college graduate, I think congratulations are in order.

حالا که فارغ التحصیل شده ای، اقتضا میکند (لازم است، مناسب است،سزاوار است) که به تو تبریک بگوییم

A speech seemed to be in order, but I wasn't sure what I should say.

ظاهرا اقتضا میکرد (مناسب بود) که سخنرانی میکردم، اما مطمئن نبودم که چی باید بگم

 

reference: http://idioms.thefreedictionary.com/in+order