Simple Answer is No. You do not need to make any payment till you get your reference number.
What is reference number for WES?
A WES reference number is a unique case number associated with a given credential evaluation report. You should include your reference number on all correspondences with WES. You will receive a reference number after you submit an application and pay the evaluation fees.4 Sept 2018
How do I know my WES reference number?
Your WES reference number is an important part of the application process. You can always find it again by logging in to My Account. It will appear at the top of the page; however, you can also look for it by clicking on Account Menu and then Order History.24 Apr 2018
Is WES reference number same as certificate number?
WES: The ECA Certificate Number & Sample The ECA# indicates that the report was generated for immigration purposes. Ref# and ECA# on the WES report are the same numbers with different suffixes. But WES Reference number cannot be used as an ECA certificate number.
Does WES reference number change?
No problem WES will be valid till five years officially, so you can send documents when you get documents from University. And about reference number it is unique allotted number for every client ,this can't be replaced so kindly proceed as your wish.
What is the validity of WES reference number?
There is no expiry of your Wes reference number. There is no problem waiting, although Wes recommends doing it early as possible inorder to avoid losing chances like provincial nomination or express entry selection.
How do I find my ECA reference number?
On the top right corner, under the date, you can find your ECA number. The ECA# indicates that the report was generated for immigration purposes. Ref# and ECA# on the WES report are the same numbers with different suffixes.