Ensuring your 4-Layer PCB Stackup is working as intended is one of many responsibilities that Altium Designer’s layer stack manager is capable of.
Copper shorts can be identified with testing. Make sure you define test requirements in your PCB design software.
For the best success when manufacturing your PCB design, you need the latest Gerber X2 file formats in the free Gerber file editor in your PCB design tools.
Lead-Free RoHS compliance in your circuit boards is a necessary factor to consider and PCB design software should be aware.
You can prepare your design for manufacturing with PCB Cart thanks to the manufacturing and supply chain tools in Altium Designer.