Your buy may get rejected or partially completed due to insufficient funds in your trading account. 

Your sell orders may get rejected if you’ve not given us the authorization for sell trades. If you’ve not enabled , please ensure you have authorized sell trades using TPIN before . This is a mandate by SEBI to avoid misuse of permission.

You can check the above and try placing the rejected orders again. To do this, go to Activity Log and tap Retry next to the particular WealthBasket.