Configuring Cosmos throughput

program.cs

 CosmosClient client = new CosmosClient(connectionString);
                
Database db = client.GetDatabase("test-db");
Container container = db.GetContainer("test-container");

const int rus = 1000;
                
ThroughputResponse manualDbThroughput = await db.ReplaceThroughputAsync(ThroughputProperties.CreateManualThroughput(rus));      
ThroughputResponse autoDbThroughput = await db.ReplaceThroughputAsync(ThroughputProperties.CreateAutoscaleThroughput(rus));

ThroughputResponse manualContainerThroughput = await container.ReplaceThroughputAsync(ThroughputProperties.CreateManualThroughput(rus));
ThroughputResponse autoContainerThroughput = await container.ReplaceThroughputAsync(ThroughputProperties.CreateAutoscaleThroughput(rus));

Thanks for this. However when I try to change from "Manual" to "Autoincrement" for a database, I get a 400 error. This is the error message I am getting:

{"code":"BadRequest","message":"Message: {\"Errors\":[\"x-ms-cosmos-migrate-offer-to-autopilot must be supplied and offercontent must not contain autopilotSettings for migration from manual throughput to autoscale.\"]}