Hi Angelo
Add the below details field wise and check again
1) Give the Detailed Description of ANNEX in "Disp.Doc.type desc." field
2) Programme Name : SAPLEHSWA_220
3) Screen No. tab Disp :1000
4) Scr.no.linear : 1001
5) Unit of Measure : what is the units for Handled waste (For Example : Tons :TO)
6) Int. number range : 01
7) Ext. number range:02
8) Validity Area : in which country you are handled this document (For Example :USA :US)
9) IntNoRNG.trnsReg.no : 03
10) Prefix Transreg No : ANNX
11) Int.no.range reg no. : 01
12) Temp Storage role : WAA130
Apart from above Maintain check mark for all remaining fields in your customization screen and maintain the generation variant of the Document .
Thank you
Balajee