Hi @jsalmont Below article may help you on mass deletion of records. please find the link below

https://nexvue.com/acumatica-tips-tricks-how-to-enable-mass-delete-records/

Hey @jsalmont

 @Naveen B  “ your method is concerned by deleting records by pages”

In @jsalmont ‘s case with 10.000 records or mine with more than 44.000 records, you need to go throw an import scénario.

Here are all steps:

1- Export records to be deleted ( in my case stock items IN2025PL)

2- Upload it in a data provider ( type excel provider)

3- go on import scenario screen SM206025 and create a new one with your new data provider file 

Bilding scenario:

in my case 

stock item summery=>inventory ID=> Inventory ID

stock item summery=> <Action: Delete >

stock item summery=> <Dialog answer> => ‘OK’

Then go to import by scenario screen, select your scenario, prepare and import .

here are some screenshots :

I used this import scenario where I have similar 10k records to be deleted.

I kept running this the whole night it managed to delete only around 900 records.

I saw this link where we can edit the generic enquiry to enable mass delete. Although it is manual I found it quick to do. 

Would there be a faster way of doing it by manipulating the generic enquiry? 

If not happy using import scenario, I just tested this option, but probably for fewer items:

1. Navigate to GI of the stock items screen
2. Enable mass deletion of records
3. back to the records
4. select all and delete