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how to update attachment with new ID

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Posted on by Ahsan baig 123

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Hi,

I’m updating the ID on the custom page header. When the ID is successfully updated, the sub-link remains intact because the "ID" is automatically updated as well. However, this does not happen with attachments. When the ID is changed, the attached files are removed from the page. When I revert the ID to its previous value, the attachment reappears, because the "ID" isn't being updated in the "Document Attached table".

Question: How can I update the ID on the header page without causing the attachments to be removed?

Thanks.

after update

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Dynamics 365 Business Central

Microsoft Dynamics NAV

Dynamics 365 Business Central migration

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Jainam M. Kothari 15,639 Super User 2025 Season 2 on at

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Hello,

To update the ID on the header page without causing the attachments to be removed in Business Central, you need to ensure that the ID is also updated in the "Document Attached" table. Here are the steps you can follow:

Retrieve the current attachments: Before updating the ID, retrieve the current attachments associated with the old ID.

Update the ID in the "Document Attached" table: After updating the ID on the header page, update the ID in the "Document Attached" table to match the new ID.

Reattach the documents: If necessary, reattach the documents to the new ID.

You can use the Business Central API to update the document attachments. Here is an example of how to update the document attachment object:

PATCH https://{businesscentralPrefix}/api/v2.0/companies({companyId})/documentAttachments({attachmentId}) Content-type: application/json { "id": "{newId}", "fileName": "{fileName}", "attachmentContent": "{attachmentContent}" }

Make sure to replace {businesscentralPrefix}, {companyId}, {attachmentId}, {newId}, {fileName}, and {attachmentContent} with the appropriate values.

This approach ensures that the attachments remain linked to the updated ID and are not removed from the page.

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Gerardo Rentería Ga... 25,230 Most Valuable Professional on at

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Hi, good day
I hope this can help you, and give you some hints.

Dynamics 365 Business Central: How to change attachment name in Document Attachment Details (1173, List) – Rename attachment | Dynamics 365 Lab

Best Regards
Gerardo

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Ramesh Kumar 7,527 Super User 2025 Season 2 on at

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You need to update the code to include the new attachment ID and Modify the ID Update Logic:
You can modify the logic where the ID update occurs, so that it first updates the attachment records before updating the header ID

begin
// First, update the Document Attached table
if DocumentAttachedRec.Get(OldID) then begin
DocumentAttachedRec."Header ID" := NewID; // Update the ID in the Document Attached table
DocumentAttachedRec.Modify();
end;

// Then, update the header ID
HeaderRec."ID" := NewID;
HeaderRec.Modify();

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YUN ZHU 95,729 Super User 2025 Season 2 on at

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In short, you need to rename the primary key of table 1173 "Document Attachment" in the rename trigger of your new table.

Hope this helps.

Thanks.

ZHU

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Suresh Kulla 50,243 Super User 2025 Season 2 on at

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The document attachments are linked based on the record values, so it stores the record primary key values in the table to link it, if you update ID which looks you are renaming the primary key or one of the key values which is specified in the document attachment in that case you need to access Document Attachment and update that.

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Khushbu Rajvi. 20,441 Super User 2025 Season 2 on at

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If this helps :https://learn.microsoft.com/en-in/answers/questions/1864420/how-do-you-rename-an-attachment-using-workflow-des

https://learn.microsoft.com/en-us/dynamics365/business-central/dev-itpro/developer/methods-auto/file/file-rename-method

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Vahid Ghafarpour 12,151 Super User 2025 Season 2 on at

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