Many companies do not realize the impact an effective implementation of an ERP system can have on their inventory procedures. The opposite is also true. If you have a poor implementation of an ERP system, it can have an equally devastating impact on inventory procedures.
I don’t know exact statistics, but I do know that all too often companies implement an expensive ERP package and within the first year decide that the package was not worth the time or the money. Generally speaking, the packages ARE worth the money, but the implementation process typically is lacking. The Company ends up with detailed inventory reports that do not reflect accurate balances and do not reconcile to general ledger balances on a consistent basis.
It is so important during the implementation process to identify someone to lead this part of the project, and who has the time to identify and correct the issues. One common error that causes major problems with inventory is that the bills of material (BOM) are incorrect for single or multiple products. If you have not identified correct part numbers, quantities of ingredients, weights, etc. in your BOM, there will clearly be issues with the reported consumption of raw materials.
Similar to this, if your raw materials have not been set up in equivalent units to that which you are issuing to inventory, not only can the potential impact on inventory be significant, it might also be very difficult to discover! One of my clients had this issue about three months ago when they recognized a million dollar adjustment floating through their variance accounts.
Another common factor that could cause inventory inaccuracy is that materials are not being moved to proper locations based on procedures. If the system allows a “location” to go negative, it’s time to check a negative report and get to root cause of what may have cause this. It can come down to material not being moved or inaccurate BOMs. I have also frequently seen transfers of finished goods between Company locations being handled as additions to or decreases of inventory. If your company does large volume intersite transfers, this can have a major impact on inventory valuations if not set up correctly.
These are just a SMALL sampling of some of the issues that can cause inventory balances to be skewed when implementing an ERP system. More importantly, if your inventory balances are inaccurate, what are the consequences?
Operationally, the system might not generate work orders if it thinks you already have the finished good items in stock. If your system is incorrect and you truly do not have the inventory you will likely miss shipments which will potentially cause loss of customers or future orders. In addition, if the work orders are not generated the system will not tell you to purchase material. It is all a downhill spiral from here.
If the system does not tell you to purchase material and your purchased on-hand balances are lacking, you will not have product to produce your manufactured parts. You will possibly be expediting material in and finished goods back out which can become very costly to your company. On top of that, it can wreak havoc on the production floor. A scheduler has to decide which jobs are priorities sometimes on an hourly basis.
Add to these costs other factors such as the cost to deal with machines that need to be changed over quickly to fill an order because your finished goods on-hand counts were inaccurate. How much does it cost your company when you have to switch over jobs that you were not thinking you had to run? What is the time it takes to switch over jobs? The list of issues can continue to go on from here.
Many of you live this in your organizations every day. You’ve bought a system, it is not “automating” your process as you had hoped, and you spend just as much time manually scheduling, editing inventory counts and balances, tracking cycle counts, and PUTTING OUT FIRES. If this is you, it is time to revisit the ERP system and implementation process. It is NOT the software; it is the lack of training, procedures, and accountability. It is time to revisit the implementation process with someone who can help facilitate the desired end result.