I'm trying to map district names to district codes for NFHS-1992-93 using the following excel files shared by Thea-DHS in reply to message#414, available on this link
I tried to see if district name and district codes are uniquely mapped to each other through the following code
bysort District (shdist) : gen different = shdist[1] != shdist[_N]
br if different
As can be seen in the attached screenshot, the district Delhi has two corresponding district codes: 0 and 2. Are these data entry errors or is there any way to explain this?