Your ERP is a powerful tool. You need to keep it sharp or the performance will drop away and if it really gets bad, you will have to replace the tool.
Here are some tips to keep your tool sharp. I will write these as annual events, but your maintenance might be more or less frequent.
Look back on what changed in your business over the last year. What new customers have you added or old ones dropped away? What new technologies have you used this year? Do you have new personnel with skills that you did not have a year ago? Any of these evolutions could be helped by changes to your ERP. Think if your organization has new growing pains that some tweak to the ERP might fix.
Keep your staff well trained. A large part of the implementation expense was training. How many people have you added over the year? This could be a good time for formal training. They all got on-the-job training when they started but probably picked up some bad habits along the way. Give the employees who were with you last year some updated training too. They might have forgotten some of the training from a year ago.
Take a good look at your servers and network systems. Technology keeps improving. Equipment keeps wearing out too. Have any performance indicators fallen off? Is any equipment on its last legs? Your business depends on this every hour of every day. Keep the hardware in top condition.
Ask people what can be improved. Ask your employees what suggestions they have to make their jobs easier and more productive. Ask your customers and vendors too. They have connections as well and can bring a unique outside perspective to improvements. And your improvements are theirs too.
Keep your ERP system up to date with upgrades and revisions. Your ERP vendor issues upgrades of all kinds on a regular basis. Some are bug fixes. Some they consider to be major improvements in their offering. Generally there is no requirement to install the upgrades unless they fix a bug that affects you. But, take the time to stay up to date. The upgrades probably need to be installed sequentially. If you get too far behind, your vendor might stop supporting you. Be sure to upgrade any bolt-on improvements you are using too.
Keep your whetstone handy and your ERP system will stay sharp and give you the results you need.