Oracle Cloud Certifications are only valid for 18 Months !!!

I was shocked to see an email that my OTM certification will expire shortly because Oracle decided to introduce the recertification policy. 

OTM Cloud was a big change in the market but nothing much changes in the system every 18 months. 

So I fail to understand why OTM exam need to be taken every 18 months to keep it active.

Order Release - Equipments

If a user want to decide how many shipment should be built for an Order Release, he/she can do so by specifying the list of of equipments in the OR Edit Screen.

OTM will not use its optimization logic in these cases. Instead, it runs an algorithm to utilize the containers mentioned in the OR even if the Shipment optimization is 1%. 

Planning will only fail when OTM is unable to allocate OR lines to all the equipments. 

Scenario 1:
OR has 10 lines. 
User has specified 2 x 20FT containers in the OR Equipments section. 

After planning, OTM is very likely to distribute OR lines like below

SH1 : 5 OR Lines
SH2 : 5 OR Lines

Scenario 2:
OR has 2 lines
User has specified 3 x 20FT containers.
Planning is very likely to fail, especially if the OR lines are not splittable.