Many transactions in all kinds of modules use order numbers or serial numbers. These order numbers are most often automatically generated. In the Number Groups (tcmcs0151m000) session you can define groups of order numbers used for dedicated areas. A Number Group is a group of the first free number series that you can assign to a specific use. All the numbers that Infor LN generates in the number groups that are dedicated to the same purpose are unique.
All the first free numbers are stored in the table tcmcs050.
As many different processes can request a free number from the number groups, we often see delays in the performance, due to locking on the first free number records. This locking issue can have a severe impact on the performance of huge batch-type transactions, but also on the performance perceived by individual users in many areas in LN.
For example: