Grouping workbench Screen WT53ACH1 *Screen Modification

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Hi,

I have a requirment to add a column on the screen that can be access on X3  via Purchase->Supply->Grouping Workbench->ACH Buyer. I did a screen look up and it was WT53ACH1 screen. I tried going to that screen and add the column "Supplier Name" and validated the screen. It ended up breaking the function. Can someone please provide steps on adding the supplier name column to this. It currently has the supplier number column.