Unable to Create or Extend customers for some of the co_cds
We are creating customers for some of the company codes to client org. it has number of company codes. we are able to extend customers Except Italy, Iraq and Nigeria Co_cds. The reason given is that field KNB1_QLAND is not on screen SAPMF02D 0610. This field is for With Holding Tax. Recently we have upgraded to ECC 6.0 version from R/3 4.7. what is cause to not creating customers for some regions.
Please give some needful suggestions.