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I would like to understand how to add a new field to the work center. For example in the Work execution work center under details I would like to add a field . I understand the customization would require to modify html, java script,css however I'm unable to figure out the underlying files. Kindly advise.
As you have identified customization is involved, so your best bet might be to open a case directly with IBM Support: https://www.ibm.com/mysupport/s/createrecord/NewCase