Hello.
While using VSX, I noticed a possible duplicate variable star entry. ZTF19aaclksh and ZTF18abnbldg share identical coordinates. I verified their information: ZTF18abnbldg has coordinates 20 46 47.344 +17 13 05.69 (311.6972658 +17.2182467).
In addition, there are also the following similar duplicate entries of coordinates:
CzeV3617 = SERIV 169
SERIV 172 = CzeV3626
ZTF18abbogxd = ZTF18abacprn
KaiV115 = ASASSN-V J054436.36+405828.2
Best wishes,
Jiashuo Zhang