The Enterprise Integration Server converts special characters in E-Form name elements during mapping. The # character is converted to Num. For example, PO# would be converted to PONum. Other special characters are converted to an underscore.
Ensure that you do not include name elements on your E-Form that may conflict during mapping. For example, do not include elements named PO# and PONum. Upon conversion, both elements would be converted to PONum. The Enterprise Integration Server does not support this E-Form configuration.