As @samliew suggested you can use the input 017698626920 directly without using any “concat” function. The Parse Phone Number module will automatically convert it to the E.164 format.
Please find the screenshots below for your reference.
Let me know how it goes.
Hi Thanks for your response. What do you mean with “Map it dynamically” ? The Website visiter type the number by itselfs. he can deside what country code he tipe in or only write a 0