What is locked activity chain in SAP SCM-APO - Advanced Planning and Optimization?

SAP Term: locked activity chain

• Component: SCM-APO

• Component Name: Advanced Planning and Optimization

• Description: Relationship between two activities that stipulates a continuous reservation of resources. There can be no other activity, no downtime and no fixing interval for the resource between these activities. For example, relationships between activities that use the same primary resource in an operation are always connected by a locked activity chain.

Smart SAP Assistant

• Key Concepts: 
  A locked activity chain is a feature of SAP Advanced Planning and Optimization (APO) that allows users to lock certain activities in a supply chain network. This ensures that the activities remain unchanged and are not affected by any changes made to the network. The locked activities are indicated by a padlock icon in the network diagram. 
  
  How to use it: 
  To use the locked activity chain feature, users must first create a supply chain network in APO. Once the network is created, users can select the activities they want to lock by clicking on the padlock icon next to the activity. This will ensure that the activity remains unchanged even if changes are made to the network. 
  
  Tips & Tricks: 
  It is important to remember that locked activities cannot be deleted or modified. If changes need to be made, users must first unlock the activity before making any changes. Additionally, it is important to note that locked activities will not be affected by any optimization algorithms used in APO. 
  
  Related Information: 
  For more information on using the locked activity chain feature in SAP APO, please refer to the official SAP documentation here: https://help.sap.com/viewer/product/SAP_APO/7.5/en-US/f3d8f9a2b6c14e8a9f3d7c2b1e9f4d6a.html