In plain English
An ERP, or Enterprise Resource Planning system, connects business functions such as sales, purchasing, inventory and finance. Some businesses use an integrated ERP; others connect separate accounting, CRM and stock tools. An accounting package alone is not necessarily a full ERP.
ERP and Manufacturing Execution Systems can overlap, but their emphasis differs. ERP usually manages commercial and planning information, while an MES follows work on the production floor. The useful distinction is which system owns each record and how updates move between them.
For automation, that ownership matters. An extracted supplier invoice should reach the right record with the correct approval state. A stock recommendation should be checked against the quantities and commitments held in the relevant system.
Integration depends on the exact product, version, permissions and available interfaces. Check supported APIs or file exchanges before quoting the build. A workaround that clicks through a screen can be more fragile than a supported integration and needs its own monitoring and recovery plan.
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