diff --git a/plugin-server/src/worker/ingestion/process-event.ts b/plugin-server/src/worker/ingestion/process-event.ts
index fc53331c98eb44..a7d563dd51dd2f 100644
--- a/plugin-server/src/worker/ingestion/process-event.ts
+++ b/plugin-server/src/worker/ingestion/process-event.ts
@@ -208,6 +208,16 @@ export class EventsProcessor {
     ): [RawClickHouseEvent, Promise<void>] {
         const { eventUuid: uuid, event, teamId, distinctId, properties, timestamp } = preIngestionEvent
 
+        const team = this.teamManager.getCachedTeam(teamId)
+        if (team === undefined) {
+            throw new Error(
+                `Cache should have been warmed for team ID ${teamId} by eventsProcessor.processEvent() in prepareEventStep, but for some reason we didn't find the data in cache.`
+            )
+        }
+        if (team === null) {
+            throw new Error(`No team found with ID ${teamId}. Can't ingest event.`)
+        }
+
         let elementsChain = ''
         try {
             elementsChain = this.getElementsChain(properties)
@@ -251,6 +261,7 @@ export class EventsProcessor {
             properties: JSON.stringify(properties ?? {}),
             timestamp: castTimestampOrNow(timestamp, TimestampFormat.ClickHouse),
             team_id: teamId,
+            project_id: team.project_id,
             distinct_id: safeClickhouseString(distinctId),
             elements_chain: safeClickhouseString(elementsChain),
             created_at: castTimestampOrNow(null, TimestampFormat.ClickHouse),
diff --git a/plugin-server/src/worker/ingestion/team-manager.ts b/plugin-server/src/worker/ingestion/team-manager.ts
index 9846071c094fde..46ec9ebcd0a055 100644
--- a/plugin-server/src/worker/ingestion/team-manager.ts
+++ b/plugin-server/src/worker/ingestion/team-manager.ts
@@ -41,7 +41,7 @@ export class TeamManager {
     }
 
     public async fetchTeam(teamId: number): Promise<Team | null> {
-        const cachedTeam = this.teamCache.get(teamId)
+        const cachedTeam = this.getCachedTeam(teamId)
         if (cachedTeam !== undefined) {
             return cachedTeam
         }
@@ -56,6 +56,10 @@ export class TeamManager {
         }
     }
 
+    public getCachedTeam(teamId: TeamId): Team | null | undefined {
+        return this.teamCache.get(teamId)
+    }
+
     public async getTeamByToken(token: string): Promise<Team | null> {
         /**
          * Validates and resolves the api token from an incoming event.