reverse delivery by VL09

Dear SAP Experts,

we wanted to reverse return delivery using VL09 , but we are getting below error:

"Deficit of BA Blocked 5 PC."

We have checked MMBE and MD04 tcode for Material/plant/storageLocation/Batch combination , stock is present in unrestricted stock.

Can you please help us to guide for solving this issue.

Thank you,

Neelam.