Batches / valuation types not completely allocated

Issue: Unable to do PGI using for outbound delivery

Error message: Batches / valuation types not completely allocated

Background of the issue: first PO of type UB created and later created outbound delivery using vl10g. I completed pick/pack but unable to do PGI.

Points to consider:1. This material is not split valuated material.

2. verified batch master record and exp date maintained

3. valuation price also maintained in material master.

4. Stock also exists in issuing plant.

Please reply back if you have solution for it.

Thanks

SAP SDN