Remove validation for alternate code.
Remove validation for alternate code.

There is no analogue to this field in OTM2

recklessromeo/otm-core,maurizi/otm-core,maurizi/otm-core,clever-crow-consulting/otm-core,clever-crow-consulting/otm-core,recklessromeo/otm-core,maurizi/otm-core,recklessromeo/otm-core,recklessromeo/otm-core,maurizi/otm-core,RickMohr/otm-core,RickMohr/otm-core,RickMohr/otm-core,clever-crow-consulting/otm-core,RickMohr/otm-core,clever-crow-consulting/otm-core