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Properties in a REST request convert to special characters



Pega properties, sent in a REST request, convert to special characters (Pega by default converts ‘eq’ to ‘=’ and ‘aster’ to ‘*’).

The below table provides a few examples:
Correct value Converted Wrong value
cov_bill_excl_in cov_bill_!in
dj_master_various dj_m*various
firm_act_req_in firm_act_r=in

Error Messages

The Connect-REST request message has failed since the request parameters are having special characters.

Steps to Reproduce

  1. Create a REST connector and connect it to a service. The request must contain property names that include keywords such as ‘excl’, aster’, and ‘eq’
  2. Run the REST connector
  3. Trace the Connect-REST request​

Root Cause

A defect in Pegasystems’ code or rules. Pega 7.1 uses out-of-the-box pyInboundIdentifierEncoder and pyOutboundIdentifierDecoder decision tables to encode and decode Pega reserved properties.


Perform the following local-change:
  1. Save both the decision tables (pyInboundIdentifierEncoder and pyOutboundIdentifierDecoder) in a local ruleset
  2. Modify the entries according to the below table
  3. Update the Return value in the pyInboundIdentifierEncoder decision table
  4. Update the PropertyIdentifier in the pyOutboundIdentifierDecoder decision table
  5. Provide unique names for the special characters
Correct value Converted Wrong value pyInboundIdentifierEncoder pyOutboundIdentifierDecoder
PropertyIdentiier Return PropertyIdentiier Return
cov_bill_excl_in cov_bill_!in '!' excl_hashcode(excl) excl_hashcode(excl) '!'
dj_master_various dj_m*various '*' aster_hashcode(aster) aster_hashcode(aster) '*'
firm_act_req_in firm_act_r=in '=' eq_hashcode(eq) eq_hashcode(eq) '='

Published October 5, 2017 - Updated October 8, 2020

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