One of the hottest topics in process manufacturing is lot traceability. The definition of lot traceability is the process of tracking given material lots throughout the enterprise and beyond. Lot traceability includes tracking lots forward from ingredients through manufacturing processes into finished goods, which are ultimately shipped to end customers. This also includes tracking lots backwards from finished goods back into the manufacturing processes and then back to the ingredients consumed in the production processes.
In ERP systems with strong process manufacturing support like Enterprise 21, companies who have a need to track lots should be able to do so easily and in an automated manner. This is a key element for establishing good system and procedural controls within one’s business, and should the need arise for a product recall, make the isolation process easy and straightforward while minimizing the amount of product necessary for inclusion in the recall.
Most companies without a modern ERP system that includes sophisticated lot tracking software functionality are managing their lot data in a suboptimal manner. Many of these companies may simply be recording lots on hard copy logs, using a series of spreadsheets to key in this data, or a combination of these methods. Not only does this process create a large amount of manual efforts, it leaves operations vulnerable to a significant amount of data entry errors and potential compliance issues.
What a good ERP software package like Enterprise 21 offers is two-fold. First, one can establish and record lot properties, which is a series of corresponding values for a given product’s physical characteristics. This practice is a key element in the quality control (QC) process. Second, one can record the complete chain of custody or pedigree of lots through the enterprise and beyond. Both of these steps are critical requirements for strong lot traceability and compliance.
Relative to system-enabled lot analysis for ingredients, when ingredients are received, the associated lots are recorded. Those received lots would typically be placed on QC hold and the inspectors alerted as to the need to inspect and analyze these lots. The inspectors would perform their analysis and record the values for the associated ingredient lot properties. Assuming the values observed and recorded were within the acceptable range for the various lot property characteristics, then the given lot of ingredients would be released to available inventory for consumption in manufacturing processes.
A similar process can be performed for system-enabled lot analysis for manufactured goods. When manufacturing occurs, the associated lots are recorded. The produced lots can likewise be placed on QC hold and the inspectors alerted to take action. Once the inspectors perform their analysis, the values of the produced goods’ lot properties would be recorded. Assuming all of the lot properties were within spec, the produced goods would be released to available inventory.
While there can be other complexities to one’s operations with packing and repacking of product into various containers with associated lots recorded, the lots shipped to a given customer would be recorded, thus providing complete visibility as to which finished goods lots were shipped to customers associated with given sales orders. This process establishes a complete chain of custody from ingredient lots received, which are consumed in manufacturing yielding manufactured lots, which are then shipped out to customers.
Once this data is recorded in the system, both forward and backward lot traceability can be performed. Forward lot traceability is the tracing of ingredients from suppliers through production processes out to customers in finished goods lots. Backward lot traceability is tracing finished goods lots back from customers into production to determine which other customers received product from those specific produced lots and back to ingredients received from suppliers, if necessary.