This file contains wall thickness or schedule data. In SRD, the schedule data is defined under Geometric Management screen. To export this data, a new data table called WALLTHICKNESS is created in PDMS/ E3D. The format in which details are extracted to the files when you transfer an ident depends on values defined in the Level column. For WALLTHICKNESS.DAT file, by default, TABWLD is set at level 1, WTHTAB, DESC, PURP and SCHED at 2, and rest of the attributes at level 3 as shown in the following image.
An attribute is always represented with a modifier as <OLD> or <NEW>. <OLD> indicates that the data is already available in Destinations or created in another file as new and <NEW> indicates new data.
Once the transfer job is completed, a zip file is generated, which contains a data file and a hierarchy file. The former contains NPD and wall thickness data for each schedule while the latter contains all the schedules available in SRD. For each schedule, the allowed nominal size and wall thickness is exported in the data file. The SPCOM file also contains a reference for the schedule. So for TUBE components, under PDREF, the schedule will be fetched and exported.