Database warning message

[chliu8219]

Hello, everyone
The PHREEQC operation results are fine, but warning messages appear. There seems to be an issue with the definition of the Pitzer coefficients, but I have clearly defined them in the database. Why is this happening?
Below are my warning messages and some data from Pitzer
Thank you! Best regards
------------------
Reading data base.
------------------

   SOLUTION_MASTER_SPECIES
   SOLUTION_SPECIES
   PHASES
   PITZER
WARNING: Redefinition of parameter, HCO3- Mg+2

WARNING: Redefinition of parameter, Mg+2 H2PO4-

WARNING: Redefinition of parameter, Mg+2 HCO3-

WARNING: Redefinition of parameter, H+ Mg+2


PITZER

-B0
  Mg+2        H2PO4-     -3.55
  Mg+2        HPO4-2     -17.5
  HCO3-       Mg+2      0.329
-B1
  Mg+2        H2PO4-    16.9
  Mg+2        HPO4-2    27.4
  Mg+2      HCO3-    0.6072
-C0                                             
  Mg+2      H2PO4-    0                               
  Mg+2      HPO4-2    0
  Mg+2      HCO3-       -0.36
-THETA                      #θ
  H+              Mg+2        0.1

[dlparkhurst]

Apparently you have defined those pairs of ions twice for one of the identifiers (-b0, -b1, etc). The order of the ions is irrelevant; a definition for Mg+2 HCO3- would replace a definition HCO3- Mg+2 and produce the warning.  Check to see whether there are two definitions between the database and your input file.

It is a warning, not an error, just to let you know the original definition will not be used. The last definition will be used. If you think there is a mistake in PHREEQC, post your database and input file.