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Small and medium business | Business Central, N...
Answered

Last No. Used Anomaly

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Posted on by 799
Using BC 365 SaaS v24.5 in production. Since implementing we have always defined all new Items being created using the ITEM No. Series Code. This past Saturday our users started receiving errors creating new items, that being the record number already exists. Looking in the No. Series table, the Last No. Used had reverted back to an Item No. that was assigned back in August. 
 
First step was looking at the No. Series page to confirm this behavior. Sure enough, the Last No. Used for the ITEM No. Series Code had flipped back to a previous value. We have Change Logs enabled for the No. Series table, and no users had directly modified entries based on accessing the No. Series page. And likewise no configuration packages were applied at all, that could potentially affect either the No. Series table or the No. Series Line table.
 
Next I pulled up the Item No. and looked at the last modified details. Found the date (likewise matching this past Saturday) and the user. We determined the user at that time was screen shotting the Item card to e-mail another location to request an item transfer. 
 
I'll include screen shots of the No. Series page, along with the screen shot of what the user e-mailed. As you can see the No. field in the Item card has been changed. But I sitll cannot replicate this behavior in a sandbox company. If I change the Item No. and accept the prompt that other records will be modified, and then change the Item No. back to its original value, nowhere do I see the Last No. Used affected.
 
Any suggestions as to what could've caused this? The user doesn't recall anything specific more than the screen shot. And the Change Logs weren't enabled for the Item table or the No. Series Line table. I need to configure porting out telemetry data to Azure I realize, but will look to do this once we hit 2025.
 
 
I have the same question (0)
  • Suggested answer
    YUN ZHU Profile Picture
    100,212 Super User 2026 Season 1 on at
    If you set the Change Log of the following field, you should be able to find the reason.
     
    And if it is not manually modified by the user, you can check whether it is caused by customization.
     
    Hope this can give you some hints.
    Thanks.
    ZHU
  • Greg Kujawa Profile Picture
    799 on at
    Yes, I realize I can add the No. Series Line can be added as a table to the Change Log moving forward. It might generate a lot of entries for each new No. that is created for all the different record types.
     
    But in terms of post mortem forensics on what already happened, the user says they only were in the Item card. My question is that admidst the myriad of different actions and whatnot in the Item card, could a user somehow modify the Last No. Used so that it would have a knock on effect as I’ve described? The user reportedly did not pull up the No. Series page. Only the Item card.

    One of my first thoughts would be to add a mod to a lot of these commonly-used card pages. Say the Item, Customer, Contact, Purchase Order, etc. cards. Flag the No. field on them as not editable. After all, I cannot think of many use cases where the user would need to go and modify an existing record's No. value. Am I missing something in this line of thinking?
  • Verified answer
    Greg Kujawa Profile Picture
    799 on at
    Final word about this. I overlooked the obvious. The ellipses (...) just to the right of the No. field on the Item card! This action allows the user to drill right into the No. Series Line and exposes the Last No. Used field. This would assumedly be the entry point where a user could inadvertently modify the value.
     
    Screen shots below, of that particular element, followed by a proposed mod that would flag the No. field as not being editable or enabled. To me this proposed mod for us makes sense. I can't think of a use case where a user would need to modify this primary key for an existing item. And they can still create a new Item as required. Since we have a prompt for selecting an Item Template before creating a new Item. Same with Customer records and the Customer page.
     
    Any feedback about this from anyone would be welcomed!
     

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