# BARRIER

> Proceed with an exclusive write only once every peer is parked

Record: `pag:keyword-coordination-barrier`
Kind: keyword
Canonical: https://banes-lab.com/ontology/grammar#pag-keyword-coordination-barrier

Listed in [Grammar records](https://banes-lab.com/api/records/pag.md), after [WAIT](https://banes-lab.com/records/pag/keyword-coordination-wait.md) and before [SWAP](https://banes-lab.com/records/pag/keyword-coordination-swap.md).

## Grounds

- [substrate-node:constraint](https://banes-lab.com/records/reasoning/substrate-node-constraint.md)