Hi
I am working with the World Bank's Enterprise Surveys, and want to append data from different countries. One of the variables I intend to keep is the region of the firm. But once I append the data for a one country to another, the codes for the using dataset automatically assume the labels of the first dataset.

for example, the region variable for Ghana is coded as follows:
1=Accra 2=Tema 3=North 4=Takoradi

and the region variable for Zambia is coded as follows:
1=Kitwe 2=Livingstone 3=Lusaka 4=Ndola

Once I append the Zambia dataset to the Ghana dataset, the region variable in the new dataset only contains regions in the
Ghana dataset, but this time with higher frequency for each region due to the addition of observations from the Zambia dataset.