Set NetSuite concurrency Limits

• NetSuite caps how many requests run at once, account-wide. REST and SOAP share one pool.

• The cap is set by your service tier (+10 per SuiteCloud Plus license):

Service tier	Base limit
Shared	5
Tier 1	15
Tier 2 / Ultimate	20

• Stacksync never sends more than 3 concurrent requests. It can only control its own traffic and not other integrations on the account.

By default every integration pulls from the same pool. When others get busy, they eat the slots and tip the account over its cap. So errors show up everywhere, including on Stacksync, even though no one is misbehaving.

Reserve slots per integration

Setup > Integration > Manage Integrations > open the integration > set Concurrency Limit.

1. Open the Stacksync integration record.

2. Set Concurrency Limit to 3.

3. Do the same for every other integration, sized to its needs.

4. Leave the rest unallocated as a shared buffer.

The MAX Concurrency Limit field shows how many slots are still free to assign.

Monitor it

Setup > Integration > Integration Governance shows allocated vs. unallocated slots and live usage per integration (NetSuite docs).

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