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Small and medium business | Business Central, N...
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Approval Workflows - Business Central

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Posted on by 49
Hello,
 
We have recently started using the approval workflow function in Business Central and we are having a minor issue with purchase documents that get re-opened having to be re-approved.
There is also an issue with Blanket Purchase orders requiring approval, but the linked PO also requires approval.
 
As such, we're essentially approving a lot of things multiple times, which is very annoying.
 
Does anyone know of a workflow set up that will take a previous approval into account when the approval request is sent?
I was hoping it could be set up as a condition on the workflow so that the document can either just be re-released or automatically release itself if approval is requested but already provided.
 
 
Thanks,
I have the same question (0)
  • Suggested answer
    Dr Gomathi MVP, MCT Community lead, MLE Profile Picture
    389 Super User 2025 Season 2 on at
    Approval Workflows - Business Central
    In Dynamics 365 Business Central, approval workflows are document-driven. This means:
    • Any time you re-open a purchase order (PO) or modify a document after approval, the system treats it as a “new version.”
    • Because of that, it clears the approval status and requires a fresh approval, even if only small changes were made.
    • Blanket Purchase Orders (BPOs) and their related POs are treated separately, so each document goes through its own workflow — hence the “double approval.”

    What you can do
    1. Adjust Workflow Conditions
      • In your workflow setup, you can add conditions to check fields like Status, Amount, or Last Modified By.
      • Example: If no financial field (e.g., Amount, Vendor, or Dimension) has changed, skip the re-approval.
    2. Use “Record Restrictions” / Event Conditions
      • Customize the workflow so it only triggers on significant changes.
      • For example, trigger approval only if Total Amount changes by more than X%.
    3. Customization with Extensions
      • Out of the box, Business Central doesn’t “remember” old approvals once a document is reopened.
      • A developer can create a small extension that:
        • Stores the approval state.
        • Checks if key fields are unchanged.
        • Auto-releases the document instead of forcing re-approval.
    4. Blanket PO vs. Linked PO
      • Standard behavior: Both need approvals separately.
      • Possible workaround:
        • Skip approval on the PO if it is generated from an already-approved Blanket PO.
        • This again usually requires a customization or a modified workflow condition.


     
  • Suggested answer
    Yi Yong Profile Picture
    2,481 Super User 2025 Season 2 on at
    Approval Workflows - Business Central
    Hello,
     
    You will need to add customization for both the scenarios you mentioned above such as PO will only need to approve once and PO generated from Blanket PO will not need to be approve again.
     
    Though it is not an ideal approach for this because the first approval could be a PO of 1k and subsequently, user can add in more items and yet the PO is still approved.
  • Suggested answer
    Rishabh Kanaskar Profile Picture
    5,474 on at
    Approval Workflows - Business Central
    Hi,
     
    This is standard behavior in Business Central, once a document is re-opened, the approval entry is reset, so the system requires a new approval. The same applies to Blanket Purchase Orders, both the blanket and the linked PO will trigger approval workflows. Unfortunately, BC does not track “previous approval” as a condition to skip re-approval.
     
    That said, you have a couple of options:
    1. Workflow condition filtering
    > You can extend the workflow to include conditions (e.g., based on status, amounts, or a custom flag) so that if the document has already been approved once, it can auto-release.
    > This usually requires creating a custom field (e.g., “Previously Approved”) that is set after first approval, and then using it in your workflow conditions.
     
    2. Custom development
    > Through AL, you can intercept the approval request trigger and check if the document was approved earlier. If yes, you can bypass or auto-approve instead of requiring user approval again.
     
    3. Process suggestion
    > For Blanket POs, some organizations avoid putting them through approval workflows and instead only approve the actual POs generated. This reduces duplication.
     
    In short, out-of-the-box BC requires re-approval after re-opening or for linked Blanket POs, but with workflow conditions or light customization, you can achieve what you’re describing.
    If you’d like, me and my team can also help design/customize such workflows to reduce re-approval overhead.
     
    Regards,
    Rishabh
  • Suggested answer
    Pallavi Phade Profile Picture
    2,649 on at
    Approval Workflows - Business Central
    Namaste @CU16090925-0
     
    I agree with YiYong , We need to customize the above scenario
     
     
    Regards
    Pallavi Phade 
  • Suggested answer
    Valentin Castravet Profile Picture
    30,429 Super User 2025 Season 2 on at
    Approval Workflows - Business Central
    Unfortunately this is not possible using standard functionality. There's no workflow set up that will do that. Your only option is to customize the system to do it.
     
  • Suggested answer
    YUN ZHU Profile Picture
    93,872 Super User 2025 Season 2 on at
    Approval Workflows - Business Central
    Regarding the first question, if the order is reopened and no approval is required, then the approval is meaningless and anyone can reopen the order and modify the details.
    As for the second question, this is independent in the Template. If you do not need Blanket Purchase orders approval, just disable or delete this Workflow.
     
    Hope this helps as well.
    Thanks.
    ZHU

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