On form, I select value in combobox for existing record and Category textbox calculates. Also shows in table. Neither happens for you?
Field name is [CATEGORY LOOK UP] but combobox named [CATAGORY LOOK UP]
Why are you saving Category and descriptive value as a single string? Set combobox:
ColumnCount: 2
ColumnWidths: 0";1"
RowSource: B;BOOKS;CL;CLOTHES;FF;FURNITURE & FIXTURES;G;GLASSWARE;J;JEWELRY;T;TOYS;H;HOLIDAY;BJ ;BETH JACOB;F;FABRIC;S;SILVER;C;CHINA & CERAMIC;CA;COSMETIC ACCESSORIES;D;DOLLS & FIGURINES;L;LINENS;M;MILITARY;MIS;MISCELLANEOUS;SE W;SEWING;SH;SHEET MUSIC;TL;TOOLS;G; GROOMING;W;WATCHES;LG;LIGHTERS
Only the Category code will save and calculated field not needed. Better, build a table of lookup values and use table as RowSource for combobox.
Advise not to build lookup field in table, just build combobox on form