Diagnosis
The planning delivery schedule instruction may still beused in items in scheduling agremeents with delivery schedules.

System_responses
Once deleted, a planning delivery schedule instruction becomes invalidin all scheduling agreements. This means that you can no longermaintain forecast, just-in-time (JIT), or planning delivery schedulesin scheduling agreement items that still contain this instruction.
Also, when you make changes to such a scheduling agreement, schedulelines in the planning delivery schedule lose their relevance forplanning and delivery. Schedule lines in the forecast delivery schedulereplace them in this regard.

Procedure
To ensure consistent data, we strongly recommend that before deletingthis instruction, you remove it from all scheduling agreementsthat use it.