The STP recognises that companies may have already undertaken security measures on their own accord to strengthen internal security systems, or participated and implemented measures under other security programmes such as the International Code for the Security of Ships and of Port Facilities (ISPS) and Transported Asset Protection Association (TAPA). It is not the intention of the STP to replace or supersede a company’s existing supply chain security systems or measures. The STP seeks to build upon industry best practices and partnerships to strengthen the global supply chains.

The various security programmes have slightly different objectives and hence, they would not be direct substitutes for the STP. Existing certifications that a company already complies with would be taken into account, if the security requirements are comparable to those required under the STP Guidelines.