Error in TPSETTINGS: transdir not set.

Hello Experts,

We are facing one issue during the import of transports.

Error-

Error in TPSETTINGS : transdir not set.

E-TPSETTINGS Could not be opened

EXIT
tp returncode summary:

tp finished with return code : 208

checks made:

1) DIR_TRANS parameter is already there in Deault Profile

2) tp connect <SID> pf -... is finished with RC-0

3) Profiels exist- TPPARAM and TP_<DOM>.PFL

4) transdir exists in TPPARAM and .PFL file.

What could be the possible reason for this error and how to resolve this ?

Questions:

1) Does parameters in TPPARAM and .PFL profiles are case sensitive?

2) Does existence of both profiles creates issues ?

Thanks,
Swati