Methods, systems, and devices for
wireless communications are described. A first
user equipment (UE) may identify a conflict between sidelink messages in one or more sidelink resources of a set of sidelink resources reserved for communications by a second UE. In response to identifying the conflict, the first UE may measure a
system load of a sidelink channel for the sidelink messages and may determine a threshold
system load of the sidelink channel based on one or more priorities associated with the conflicting sidelink messages. If the
system load satisfies the threshold system load, the first UE may transmit a message that indicates the conflict. Additionally, or alternatively, the first UE may transmit the conflict indication using a resource determined based on whether one or more of the conflicting sidelink messages are a broadcast sidelink message or a groupcast sidelink message.