There is no production specification field available in Goods Movements.
SAP Business Bydesign
Reproducing the Issue
Go to Internal Logistics work center.
Go to Common Task - Goods movement.
Click Add row.
There is no field avaialbe for you to enter production specification.
Product specification is not supported for any types of internal movement scenarios.SAP Business Bydesign support Identified Stock / Batch which can be linked to the Production Specification.
You can create an Identified Stock and linked it to the Production Specification, Identified Stock is supported in internal movement scenarios.
Product Specification, Internal Logistics, Goods Movement , KBA , AP-SLP , Site Logistics Processing , How To