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Dynamics 365 Community / Forums / Small and medium business | Business Central, N... / AL - How to prevent us...
Small and medium business | Business Central, N...
Answered

AL - How to prevent user change field's value after Purchase Order status is Released

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Posted on by Hoang Ng 307

After Purchase Order is released, some fields cannot be changed but some fields are allowed to change. EX: Transaction Type

pastedimage1673592665904v1.png

How to customize to show the error when User tries to change this field value while the Purchase Order status is released ?

I have the same question (0)
  • Suggested answer
    Nitin Verma Profile Picture
    Nitin Verma 21,812 Moderator on at

    Hi,

    You can customize the solution OnBeforeValidate of this field and put below code

    Rec.Testfield(Status,rec.Status::Open);

    Thanks.

  • Suggested answer
    Mohana Yadav Profile Picture
    Mohana Yadav 61,214 Super User 2026 Season 1 on at

    Use OnBeforeValidate trigger and standard function TestStatusOpen();

  • Hoang Ng Profile Picture
    Hoang Ng 307 on at

    Thanks Nitin, Yadav

    Is it the below code correct:

    tableextension 50110 "TLC Purchase Hdr. Ext" extends "Purchase Header"

    {

       fields

       {

           // Add changes to table fields here

           field(50110; "Deposit Date"; Date)

           {

               Caption = 'Deposit Date';

               DataClassification = CustomerContent;

           }

           modify("Transaction Type")

           {

               trigger OnBeforeValidate()

               begin

                   Rec.Testfield(Status,rec.Status::Open);

                   error('You can not change this field after PO is released');

               end;

           }

       }

    }

  • Verified answer
    Mohana Yadav Profile Picture
    Mohana Yadav 61,214 Super User 2026 Season 1 on at

    Separate Error message is not required

    Just Rec.Testfield(Status,rec.Status::Open); is enough or TestStatusOpen();

  • Hoang Ng Profile Picture
    Hoang Ng 307 on at

    Thanks Yadav.

    Your way can work.

    I tried another way to show the detail message

    modify("Transaction Type")

           {

               trigger OnBeforeValidate()

               begin

                   if (rec.Status = rec.Status::Released) then begin

                       //Rec.Testfield(Status, rec.Status::Open);

                       error('You can not change this field after PO is released');

                   end;

               end;

           }

  • Suggested answer
    Mohana Yadav Profile Picture
    Mohana Yadav 61,214 Super User 2026 Season 1 on at

    Just make sure that if you are using other purchase documents like Invoice or Return Order etc. and transaction type field then also the error message will show as "PO is released".

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