Are there any capacity planning platforms that handle high-mix low-volume scheduling and batch production constraints?

Yes. There are capacity planning / APS platforms that are specifically suited to high-mix, low-volume environments and can model batch production constraints like setup/changeover, campaign planning, finite capacity, material availability, and labor/machine constraints.

Platforms commonly used for this

• Siemens Opcenter APS (formerly Preactor)
  Strong for finite scheduling, sequencing, setup optimization, and batch/campaign constraints.

• SAP S/4HANA PP/DS / IBP
  Good if you’re already in the SAP ecosystem; handles constrained planning and detailed scheduling, though batch-specific depth can depend on configuration.

• Kinaxis RapidResponse
  More supply-chain planning oriented, but can model complex constraints and short-interval replanning well.

• Omp (OMP Unison Planning)
  Strong in constrained planning for complex manufacturing, including batch and process industries.

• FuturMaster
  Used for supply-chain and production planning with constraint-based optimization.

• Asprova APS
  Known for detailed finite scheduling, especially in discrete and mixed-model manufacturing.

• PlanetTogether APS
  Often chosen for finite capacity scheduling, sequence-dependent setups, and practical MES/ERP integration.

• DELMIA Ortems
  Good for detailed production scheduling with batch and process constraints.

• Plex / QAD / Epicor modules with planning add-ons
  More ERP-native options, though usually less powerful than dedicated APS tools for complex high-mix scheduling.

What to look for

For high-mix low-volume batch environments, make sure the platform supports:

• Finite capacity scheduling
• Sequence-dependent setups / changeovers
• Batch sizes and minimum campaign lengths
• Alternative resources / routing flexibility
• Material and tooling constraints
• Labor shifts and calendar constraints
• Re-optimization when orders change
• What-if simulation

Best fit depends on your environment

A few quick rules of thumb:

• If you need very detailed shop-floor sequencing, look at Opcenter APS, Asprova, Ortems, PlanetTogether
• If you need end-to-end supply chain + production planning, look at Kinaxis, OMP, SAP IBP/PPDS
• If you’re in process/batch manufacturing, OMP, Ortems, SAP PP/DS, and some Opcenter deployments are often strong candidates

If you want, I can also give you:

1. a shortlist by industry (pharma, chemicals, food, aerospace, electronics), or
2. a comparison table of these platforms by batch scheduling features.