OB02 step WT not getting created

Hello Experts,

I am trying to work with storage process for outbound with steps OB01(Auto WT checked),OB02(Auto WT checked),OB03 without rule based.Once i create a WT for OB01,while confirming i create a pick HU and system is determining right WOCR and Storage process.But it is not changing dest bin from GI zone to pack bin.Also no WT is created for OB02. Can you please guide what could be the issue.

Regards,

Khushboo