To manage quality notifications for customer complaints in the SAP ECC QM module, you will need to follow these steps:

1. Configure the notification type: First, you will need to configure a notification type for customer complaints. This can be done using the transaction code QM01. You can define the fields that need to be filled in for the notification type, such as the customer name, complaint description, and priority.

2. Define the notification profile: Once the notification type is configured, you will need to define a notification profile for customer complaints. This can be done using the transaction code QMNUM. The notification profile determines the status of the notification and the actions that need to be taken when a notification is created.

3. Create a notification: When a customer complaint is received, you can create a notification in the SAP ECC QM module using the transaction code QM01. You will need to fill in the fields defined in the notification type, such as the customer name, complaint description, and priority.

4. Assign the notification to a quality issue: Once the notification is created, you can assign it to a specific quality issue in the SAP ECC QM module using the transaction code QM10. This will link the notification to the relevant quality issue and allow you to track the status of the issue.

5. Define the quality issue: In the quality issue, you can define the root cause of the customer complaint and the corrective actions that need to be taken to resolve the issue. This can be done using the transaction code QM02.

6. Perform the corrective actions: Once the quality issue is defined, you can perform the corrective actions to resolve the customer complaint. This may involve updating the master data for the product or adjusting the production process to prevent similar issues from occurring in the future.

For example, let's say a customer complains about a batch of products that have a strange odor. You can create a notification in the SAP ECC QM module using the transaction code QM01 and assign it to a quality issue using the transaction code QM10. In the quality issue, you can define the root cause of the odor and the corrective actions that need to be taken, such as adjusting the production process or updating the master data for the product. Once the corrective actions are performed, you can close the quality issue and the notification.