Problem

Even after saving the section file to the sacs model, its showing error below:

Answer

The issue is related to file system access permissions. 

From the snapshot shown, the User-Defined Section Library is pointing to a network/installation directory. You do not appear to have full write permission to that location. As a result, SACS cannot reliably read from or update the section library, which leads to the behavior you’re seeing.

This is a common scenario in IT-controlled environments where installation folders or shared network paths are set to read-only for users.

Recommended approach: You do not need to place the section library inside the SACS installation folder. 

Instead:

• Create a local working directory (for example: D:\Working Folder\SACS_ProjectA\)
• Place your user-defined section file (*.sec) in that folder
• Update the User-Defined Section Library path in the Analysis Generator to point to this local location

This approach avoids permission conflicts entirely and is what we generally recommend for stable SACS operation.

As a reference, I tested the same workflow on my machine by placing the section library and working files under a local D:\ directory. The analysis completed successfully with no errors, which confirms that the setup itself is valid.

If you specifically require the section library to reside in the installation or network folder, then your IT team will need to grant you full read/write access to that directory. Without this, the issue will persist.